Sea Eagle SE-330 (inflatable): Because it fits in my car.
Some stern-drive recreational boat: Because J.'s family owns it, and we went to a lake. (I want them to name it "Drag and Drop" as it's used as a ski and wakeboard boat and occasionally for diving.)
Cattle boats: Because that's how my LDS certifies people, and I get to work with them to get my DM.
Yamaha Waverunner III (old): Well, actually, it's currently in need of repair, but it's enough to get a diver out into the lake if I get it running again.
Whatever's there: What, you think I'm picky?
Nonexistent: I guess shore diving doesn't really count as a boat... oh, well.
Intrinsic (85' motor yacht): Haven't been off it yet, but if I can swing it, I'd love to dive off it while my aunt and uncle are out taking Mom and Dad on a cruise in the Great Lakes.
Navy surplus supply ship: I don't remember the name, but once my aunt and uncle and their friends have finished converting it into a houseboat and have sailed it down into the tropics, well, *somebody's* got to go dive off it to be sure everything's in order, eh?
(Okay, I'll stop now, but I could've gone on about liveaboards and all the rest. The short answer, of course, would have been simply to say, "Any type. I just like to dive, and variety is fun." I don't often give the short answers, however.
)