I *love* Tempus, and would quote most of what he says here. So, these are my favorites from the top of my head (and a little help from the scripts, so my apologies, if they aren't exactly as they were on the show) from my favorite two Tempus episodes:
3. "Duh!" (Tempus to Lois, Tempus Fugitive)
4. "Well, that was worth the whole trip -- to actually meet the most galactically *stupid* woman who ever lived!" (Tempus to Lois, Tempus Fugitive)
5. "Please. I'll go to jail, I'll strap myself into the electric chair -- but don't make me listen to this!" (Tempus to Lois and Clark, Tempus Fugitive)
5. "It's good TV! Fun for the whole family! And then of course there're those magic words guaranteed to make it a ratings bonanza. 'Help! Superman! Save me!' Except there *is* no Superman," (Tempus to Wells, Tempus, Anyone?)
6. "Only thing that could ruin this'd be a commercial." (Tempus to Wells, Tempus, Anyone?)
6a - "Popcorn?" (Tempus to Wells, Tempus, Anyone?) - I'm not sure if this is an actual line (I don't have time to cue up TA, right now), so I'm adding it here.
7. "God, Herb, who writes your dialogue? You sound like The Prisoner of Zenda." (Tempus to Wells, Tempus, Anyone?)