I will be running some slots at Nerdcon in Portland, OR.

Any recommendations on good mods that are fun but do not require players to have understanding of prior mods, SR, etc.?

I figure SR2-01 is good, as it provides a good feel for Denver. I've judged through SRM2-03, so I don't know that many mods (and SRM2-03 the Grab is part of a series).

Thanks.

Three that would all be exceptionally good intros would probably be:

SRM02-01 Parliament - Intro to Denver
SRM02-04 Thrash - Very free form adventure, that lets the players strategize.
SRM02-12 Winter Wonderland - While there are tie-ins to other adventures, it's perfectly playable out of context.