Something Awful's comedy goldmine - look at the last pic on the page: http://www.somethingawful.com/index.php?a=4053&p=4
Here's a great one: GIANT ROBOTS IN WAR!!! OMG! Go a few pages to see some Transformers. I love the Metal Gear Rex one. Click Here
All of the Nemesis Prime repaints are what happens to Prime when Elita-1 breaks up with him and he drowns his sorrows in Simple Plan CD's and Myspace posts, based on emo stereotypes. Speaking of stereotypes, I wonder if this was in Carbombya: http://i.somethingawful.com/inserts/articlepics/photoshop/07-28-06-robots/snortpocket.jpg