I've always thought that it might be interesting to do a Pretender Xover. I mean, Sam Lane and Mr. Parker were both played by Harve Presnell. I've seen a LNC/JAG crossover, but Mac was with Mic. (Not as icky as Mac with Webb, but close.) I did a trilogy of crossovers with Forever Knight, and familiarity with the show wasn't really necessary.
I've been half considering another one, just for laughs.
I just can't seem to give up... then again, LaCroix is a stubborn old bas**rd. (he's a 2000 year old Roman General, after all)
Laura