There are some that I really have not liked, so I would not recommend them all. But, it's more fruitful to talk up the nice ones.
So far I think all the Vampire ones have been great. Yeah, Mote was a bit slow, but there are some moments of totally gold in almost all the sessions, even when they accomplish nothing.
Apart from that, all L5R are fantastic.
Among the newer, I think CADave's Star Trek one is really good. I feel it has much of the same vibe as the tv show. The episode that was one long session on a resort planet was kind of sluggish (drinking and partying is not very ST in feel, sorry), but when they are up in space those episodes are old school ST fun.