It would have been nice if Justice For All had had a new case also.
Touch Detective was a little limiting in its interactions with the game world. Nicely written, though, and funny in places.
I'm playing Hotel Dusk at the moment. Just started it, actually. The lead character has a slightly annoying personality.
If you can get past the language barrier, I would recommend the following:
Kenshuui Tendo Dokuta
Kenshuui Tendo Dokuta 2: Inochi no Tenbin
The Kanshikikan - Kinkyuu Shutsudou!! Jiken Genba wo Touch Seyo
All of the above are similar in tone and gameplay mechanics to the Phoenix Wright games, and all are worthy of a english translation.
