"America's Funniest Home Videos," the longest-running primetime show in ABC history, celebrates another landmark, its 400th episode. Highlights include wedding mishaps, college kids making a homemade water slide and sliding through dorm halls, and a little girl who makes a big mess with chocolate powder.

On the two-hour Season Finale of "America's Funniest Home Videos," three $100,000 video prize winners will return to the show to compete for the Grand Prize, their choice of an Adventures by Disney vacation out of 10 select trips to some of the most desired locations around the world. In addition to the video prize winner, two lucky sweepstakes entrants will also be selected to win an Adventures by Disney trip.