I don't remember ever seeing Catbert on his own - outside of the office. This is a weird strip in context with 99% of the strip. But I agree - the "Hag" line is the funniest line in a long time.
Seriously istbar, that could have just been the end of the strip and it would have been hilarious! Granted I know they're generally 3 frames, but SA could make an exception. Or just cut off the first frame completely. Anyone who's read "Dilbert" once knows Catbert's job.
That brings me to another point. I know this is already too long, but I just want to say it's funny that virtually all of the strips I've seen with Catbert have his description on the first frame and I've always found that odd.