Here are some links for some funny stuff ups:

http://funnylogo.info/engines/Google/White/Yahoo.aspx

http://funnylogo.info/engines/Spiderman/Blue/Wii.aspx

http://funnylogo.info/engines/missionimpossible/Black/MISSION%20POSSIBLE%20IF%20YOUR%20NAME%20IS%20ANTONY.aspx

http://funnylogo.info/engines/Yahoo/Red/I%20HATE%20YAHOO.aspx

http://funnylogo.info/engines/Yahoo/Red/YAHOO%20SUCKS!.aspx

http://funnylogo.info/engines/Google/Black/Mac%20is%20superior!.aspx

http://funnylogo.info/engines/Yahoo/Red/WINDOWS%20IS%20GREAT%20TOO!.aspx