I'm tempted to through in Tenjho Tenge just to complete the set, but it's not really that awesome.
I just don't understand 'Oh Great' (guy making Tenjou Tenge, Airgear, etc.). His series always start really strong and awesome and then the story just starts shitting itself and it turns into a pile of crap. It's the same thing with everything he made. Great start, meh middle and shitty end.
Anyway, went to MyAnimeList and here's what I rated highly (man, I really need to update it...):
Classic movies everyone should watch:- 5 Centimeters per Second
- Princess Mononoke
- Metropolis
- Toki wo Kakeru Shoujo (AKA The Girl Who Leapt Through Time)
Good Movies/OVA you should enjoy:- Suzumiya Haruhi no Shoushitsu
- Tengen Toppa Gurren Lagann Movie: Gurren-hen
- Tengen Toppa Gurren Lagann Movie: Lagann-hen
- Macross Plus
- Blue Submarine No. 6
- Neon Genesis Evangelion: The End of Evangelion
- Evangelion: 2.0 [...]
- Patlabor: The Movie
- Mobile Suit Gundam Seed C.E.73: Stargazer
Good Series (covers wide range of styles):- Tengen Toppa Gurren Lagann
- Katanagatari
- Genshiken
- Genshiken 2
- Serial Experiments Lain
- Jyu Oh Sei
- Solty Rei
- Zegapain
- Durarara!!
- Speed Grapher
- Trigun
- Mai-Otome (+Zwei)
- Top wo Nerae!
- Top wo Nerae! 2
- Martian Successor Nadesico
- Kamichu!
- Black Lagoon
- Black Lagoon: The Second Barrage
Stuff I liked, but most didn't:- Mobile Suit Gundam Seed
- Mobile Suit Gundam Seed Destiny
- Mobile Suit Gundam Seed Destiny Final Plus: The Chosen Future
- Code Geass: Hangyaku no Lelouch
- Code Geass: Hangyaku no Lelouch R2
- Gunslinger Girl: Il Teatrino
Stuff that's good for guys AND girls (and I shit you not):- Mahou Shoujo Lyrical Nanoha A's
- Rozen Maiden
Stuff I liked because I'm a weirdo, but man was that shit completely hilarious:- Kyou no Go no Ni
- Puni Puni Poemi
- Kujibiki Unbalance