Well, there's only one team on the ST that gets my full respect: The Assembly Line. Fast code, original concepts (well, except Xenon II, but it was the Bitmaps' fault :P), playable games, what more can you ask for?

If I get to choose only one game from them, then it's got to be Interphase. An absolute dream! Plus it runs like a dream on my Falcons & TT :P