Ingredients:  
1 Star Trek:TNG apéritif
2 fingers Oban
1 (each) chaser Buffy and Notting Hill
Result:  one very amusing evening.  Day Three of vacation for the worn-out engineer, in fact.  By 9:30, Jeff was laughing at all of my jokes, not just the funny ones.We've gotten a little spoiled in the past few weeks; our exposure to TV commercials is fairly limited now that we have a TiVo to speed through them.  Tonight we picked up on the tail end of Notting Hill, and had no buffer to zap through commercials.
So he (see Oban) and I (see mental tiredness from finishing new cat.net skin) watched commercials, and made fun of them with the best middle-of-the-evening gusto we could muster.
Until we got to the inexplicable commercial, that is.  Seemingly unconnected images flashed by.  It took us a few seconds before we both realized that every shot was zeroing in on the hindquarters of the people we were watching.  
"What is this, a butt commercial?"
"No idea."