Seawitch is probably my favorite, but Meteor is a great one as well. Due to the angle of the rubber rings around the drop banks, you can sweep the 1's, 2's, and 3's drop banks. But the best sweep is the 2's bank and if you hit it right, you can sweep the 2's bank and also sweep part of the meteor bank with the same shot.

meteor sweep.jpg

I forgot about JD, you can sweep the drop bank from the upper left flipper. I haven't been able to sweep the full bank, but you can get at least the first 3, making it easier to complete the bank in order start locking balls.

Looking at the Classic Stern games, there are a few other ones that look like they have sweepable banks of drop targets. Can anyone confirm?

Cheetah
is it possible to sweep the center 5 bank on Cheetah from the upper left flipper? It looks like it would be possible. If you can sweep the bank into the mini-orbit with spinner, I will have to get me one!

Catacomb
I am also guessing one of the drop banks of Stern Catacomb can be swept, but don't know for sure.

Viper
The upper right drop bank looks sweepable to me.

Also, a couple others...

Fathom
Center drop bank looks sweepable from the upper right flipper

Flash
Center drop bank looks sweepable from the upper right flipper