Specifically the 'too funny' one from the last forums-iteration, where the little yellow guy cracks up and pounds his fist in laughter. The 'laugh' emoticon in the 'more smilies' tab is simply a static version of the 'cheesy' smiley (like so: 'cheesy' :D 'laugh' :))), and it doesn't carry anywhere near the same connotations of over-the-top hilarity. I'm not asking for this to be a high priority or anything, but it'd be nice to have it back. ;)
As always, deathshadow, your efforts on our behalf are much appreciated! O0