I mentioned this in the old thread, but I think it's worth repeating. Heroes Initiative puts out these cool books that collect approximately 100 donated sketch covers artists draw on. There's one for Spider-Man, Wolverine, the Hulk, the Avengers, and the FF. The covers are then sold at auction, and all proceeds got to the charity, which does a great job supporting comic creators in need. More covers and info here:

http://www.heroinitiative.org/newsde...ur+100+Project

I bought the Wolverine and the Avengers, and I take them to cons to get artists to sign them, as it usually easier than digging out the issues and hauling them around. Here's one by Chris Bachalo.