I liked the ori arc. Mitchell seemed like a pretty good replacement for mcguiver since he wanted to leave the series.
remember when jack first spoke to master bray'tac about hammond? shortly after bray'tac met with general Hammond, saying something about Hammond being from Texas and patting his own head. i found that funny. and a few episodes later, when that man activated a device to rewind time, i liked the part where jack and teal'c where playing golf in the gate room with the star gate active and hammond caught them 
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i think they are the best bits along with jack struggling to make sense and his constant referencing to kid shows.
I remember that episode. Earth was stuck in a temporal mistake in which time kept repeating, but only teal'c and jack could recount the events from each rewind. Anyway, only earth was stuck in the temporal rift. The rest of the universe wasn't. Which makes me curious how many times jack played golf at the gate, how many people on the other end of the worm hole are curious of these high velocity little white balls that keep flying through the gate, some of which may have (probably did) knock in the head of whatever sentient species was on the other side of the gate.
I also enjoyed many of sg1's subtle jokes about star wars. Especially in the ori arc where the blonde chick was asking who in the world was born from a lady who conceived without the presence of a man. In which teal'c replies "Darth Vader".
The ori arc was really cool though. Talk about an enemy that was nearly invincible. The milky way really got lucky when the ani-prior device was invented as well as discovering merlin's invention that can destroy ascended beings.
