Unlike creating lolcats, which requires just a photo and a grasp of the broken English of kitty pidgin, GraphJam requires readers to come up with concepts and create pie charts, histograms and bar graphs. Daunting for sure, but the potential for moments of meme-genius is there.
There don't seem to be many funny graphs up yet but I'm sure there will be some to come. Here is one that I almost chuckled at:
see more funny graphs
An older graph-humour favourite:
Crappy Graphs is a good one as well.