Wow. What a book. The premise is, dozens of cartoonists are sent a couple of panels of old Popeye & Little Orphan Annie comics, and then they have to draw panels connecting the two or spin off of them in some other way. That's the gist of it, but the rules are loose. Some friends of mine have stuff in it too.
Many of them are really funny. A lot of them went into deviant or transgressive territories, to say the least, but all of the approaches or "solutions" to the mash-up are interesting and creative. Some are more formal, a few get pretty broad and abstract. It's a big comic with over 70 artists and printed on nice old-fashioned newsprint too.
I love the improv feel to it, and the editor, Josh Bayer, encourages readers and other artists to play the game too (but doesn't want to give the false impression that he's soliciting them for print). In some ways, it's a book that'll appeal to comics insiders but I think many more than that would enjoy it.