I second the repeated viewings. The Other Guys is funny as balls and only gets funnier the more you see it. I imagine there will be some kind of funny plateau where it just stays that funny, then tapers down to not so funny, but I have yet to reach that plateau.
"You know what we call it when they do that? A soup kitchen."
Talledega Nights is also hilarious upon repeated viewings, as is Step Brothers. Adam Scott is rarely a poor choice. "It's the fucking Catalina Wine Mixer." I like Anchorman as well, and I just hope they really utilize Harrison Ford in the sequel. Just really make him do some uncomfortable things right before we have to see him as Han Solo again. That would rule.
I think Ferrell is amusing to funny in a lot of things, but I will say this about him; when that fucker misses, he MISSES. Swings like fuckin Babe Ruth.