Oh God, yes. Also the fight with Kreia after. The best fights in videogames are those you have no trouble transplanting over to a movie, and the Old Republic era has so many of those: Revan/Bastila and Revan/Malak in KoTOR1, Surik/Sion and Surik/Kreia in 2, and TOR...oh, don't even get me started.
Yes. The Old Republic era battles are all very good. I do love Revan's battles, as he is a personal favorite (one of the few Force-users to see that there is more to the Force than the Jedi view and having the strength of will to tap into the Dark Sode without letting it consume him). Sion has also always been a personal favorite maybe because of how relatable he is: all of us at one point or another have internalized emotions, allowing us to keep going without "disintegrating" to the pressures of life for a short time only to find ourselves unable to let it go afterwards.
Another great fight is the one from the Crosscurrent novel between the old Jedi and his apprentice. Perhaps one of the best lines from the EU is in that fight. The Jedi has embraced the Dark Side in order to gain the mastery of the Sith Lord, realizing that by doing so he has violated everything he has ever lived for, but that the Sith MUST be defeated at any cost. He says: "I hate myself for what I have become. But I hate you more!" And proceeds to kill the Sith and destroy the ship so that neither of their stains will remain in the galaxy.