Don't worry, there are quite a few. I mostly remember the love interest ones:
Alistair - Love interest for a female Warden.
Morrigan - Love interest for a male Warden.
Zevran and Leiliana - Love interest for a Warden of either sex.

I love all the characters in Dragon Age though, not like Mass Effect where I just used Kaidan and Garrus the whole game, but also had a soft spot for Tali (Who's back for ME2 as well :D)