I'm rewatching season 1 too right now and I realized that the realtionship between them is quite different
Yeah, I haven't really re-watched the later season, but I was kind of surprised when I went back and watched season 1.

It's, I don't know, a lot more affectionate. I think in the later seasons Don starts taking Charlie for granted a bit more. Also, he'll send Colby or one of the others to get Charlie, or to give Charlie extra information on a case, when in season 1 it was always Don interacting with Charlie.

But I miss Colby...
I more miss Megan. I don't like Terry. I didn't really like Megan all that much to begin with, but she's totally grown on my, and I'm in love with her like whoa.

The bad thing is, I can't remember if they ever said why Terry left, or why Megan and Colby joined. I'm going to start watching season 2 tonight, maybe they'll say then.

Also, as I watched the eps, I rememebered that thing we were talking about earlier this summer, about writing down funny quotes. I was watching the eps with my family so couldn't pause to write things down, but I made little notes on places to go back to. Maybe one day I'll actually follow through :P