Darth Maul v.s. Lorn Pavan
sure, it wasn't exactly a "fight" persay(<spelling), but it lasted a whole book almost. I just love then ending. Maul shows up at his hotel room, unexpected, and lops off his head.
this is just one of my favs.
also, MAul vs Sidious. Knows he's about to lose. What does he do? Grovel? Beg for mercy? nope........bites the old fogey's hand, and spits the blood back in his face!!!! AmaZing!