Check out this Worf Tribute video. It's a good compilation of stuff from TNG. (As always, he is not a merry man!) http://www.youtube.com/watch?v=qnFt1UcpG34
The very best Worf drama was with Star fleet Ambassador K'Ehleyr. She brought out the personality of Worf more than any other character in the series and the writers disastrously turned a great episode into a calamity by killing her and Duras off, two of the best Klingon characters played by great actors in TNG season 4 episode Reunion.