Well, I can give you a few that I liked and a few that I didn't.
Top Five Favorite Anime:
1. Full Metal Alchemist. I'm a huge fan of this Anime, from its plot twists to its over-the-top alchemical powers, to the movie that ends it. Does it have a happy ending? Sort of. Will it leave you changed after watching the entire series? Perhaps. The good news is they now have an Animanga for this...
2. FLCL. Just watch it. Seriously, it is the most surreal, awesome thing you will ever see.
3. Tenchi Muyo (The Original). As odd as it sounds, this was the Anime I grew up with. I watched Tenchi Muyo through Tenchi in Tokyo (or Universe, I can't remember which came last), and I have to say that the original Tenchi Muyo was always my favorite. In particular, Ryoko is my absolute favorite character in the series. She's crazy, she's witty, she's over the top, and she's a Space Pirate Demon. Can't beat that.
4. Dragon Ball and Dragon Ball Z (up to Frieza Saga). The other Anime I grew up with, Dragon Ball Z was a pretty epic show... Up until the Frieza Saga. I watched it until Cell Saga ended, and then completely ignored it once the Majin Buu Saga began. I have to say that Cell Saga had some of the best filler movies in existence (Brolly: The Legendary Super Saiyan and Bojack Unbound), and it actually achieved one of the goals of Dragon Ball Z by making Gohan the main character (let's face it, that 'untapped power' thing had to go somewhere)... However, after that Gohan became a total wuss and all the main characters got the crap beaten out of them by a pink blob.
5. Pokemon (Original Japanese, Uncut). I feel this is sort of cheating, but it's true. The original first season of Pokemon was rather amazing to watch. Once again, I strongly feel that the Japanese version of the first movie moved me to this decision as it is unparalleled by any other Pokemon Movie created. The English Mewtwo looks like a pansy on an ego trip compared to the Japanese Mewtwo. Don't even get me started on the difference in the voice actors, which I must say is the worst dubbing ever. I absolutely despise the voice actors for the English version of Pokemon, with the exception being James'. Those of you whom know why get a cookie.
Edit: Blood Pleux (Blood +) and its movie, Blood: The Last Vampire (NOT the live action one. That was horrible), snatch an honorary sixth spot. Chiropterans are awesome.
Other anime I like include Outlaw Star, Trigun, Gundam Wing, DeathNote (Though I prefer the live-action movies, to be honest. It condenses the story in an excellent fashion and is a rare godsend), Yu-Gi-Oh! (Season Zero and 5D's included), Ghost In The Shell SAC and Second Gig, and an Anime I saw but can't remember the title of that has as much randomness as FLCL, but is much longer. The last anime on that list was on Adult Swim for a short period of time, but I cannot recall the title. It involved an animator and a kid with a bat that killed people, that's about all I can remember.
Now, my worst five. These go in reverse order. If you are afraid that your favorite Anime is going to get bashed, then please don't read on.
5. Yu-Gi-Oh! GX. I can't believe I'm betraying myself on this one, but oh well. GX was horrid, not only in the English Dub, but in the Japanese one as well. There was no plot until about halfway into the second season, and even that seemed to be completely ignored later on in the series, as if it didn't happen. At least, until Yubel shows up. Yubel's initial saga was probably the only thing good we got out of GX. In the US version, it ends with Yubel's saga, and has yet to be continued. Why? That hasn't been explained. However, in Japan, it ends with Jaden GOING BACK IN TIME to duel Yami and Yugi. Why? Not explained. Go figure.
4. Naruto. Yes, I know this is going to get me in trouble with some people, but I don't care. Naruto is horrible, and Shippuden doesn't look like it's going to make things better. I want to love Naruto for cool characters like Itachi, Orochimaru, and Gaara, but I can't. Because every time I watch it, I'm reminded of how much of a blatant DBZ rip off it is and how annoying the three main characters are. Granted, I can understand Sasuke, and Sakura gets better over time, but Naruto... Jesus. To make things worse (SPOILER ALERT), the big baddie that's been wreaking havoc in Shippuden known as Pain brings everyone he kills (sans the Toad Sage, I think) back to life. What. The. Crap. Utterly ridiculous.
3. Shin Chan. I realize it's supposed to be comedic, but it's just asinine to me...
2. Dragon Ball GT. Way to go, Toei. Make Trunks a total wuss, Goten a pansy, Vegeta look questionable in sexuality (Final Shine Attack, anyone?), and Goku a kid again. Oh, and Baby. Can't forget the villain named Baby. In fact, they won't let you forget him; they bring his name into the conversation at EVERY given opportunity. I'd rant on about this series even more, but I'd probably start setting off the curse filters.
And, the number one WORST Anime of all time in the opinion of ArmoredMewtwo?
1. G Gundam. I like all of the other Gundam Series but this one, and yet it lingered on the air for what seemed like an eternity. There's no clear explanation why, either, as it completely destroyed what made Gundam Wing so cool. At least, that's my take on it. Say what you want about the series yourselves, I found it a God-awful show and I'm so glad that it's been off the air for years.
Well, that's my take on things. :3