You might like the English dub of The Melancholy of Haruhi Suzumiya.
Crispin Freeman = Hideki = Kyon = narrating = funny
Michelle Ruff = Chi = Yuki Nagato = both very powerful
I'll also add Scrapped Princess for the same cast reasons (Crispin Freeman, Wendee Lee, Bridget Hoffman, Kari Wahlgren). The main character doesn't know her true destiny, and the plot is fairly involved.
If you're wanting to go the ecchi route, there's Midori Days, where a guy discovers his right hand is a girl.
The prequel to Chobits is Angelic Layer. You'll recognize a few of the characters in memory.
And of course there is Tsubasa Chronicle which merges Chobits characters with other CLAMP offerings. Most of the Chobits characters (Sumomo, Kotoko, Ms. Hibiya) appear in the RPG world in the last third of season 1.
Edited on 11/23/2008 3:34pm