Yes, you can throw all grenades while moving.  There should have already been a thread about throwing grenades while moving.  But yeah, in BG's, they're awesome. 

Chasing a FC, throw it in front of them(takes some practice to get it down good).  Being chased while being the FC, spin the camera round to see how close then are, then throw accordingly (usually just in front of yourself to compensate casttime, airtime, and detonation).

LOVE EM!!!! also good to throw against an AB flag when someone's trying to assault it