Some bullet points come to mind...
fuel pump current draw test
static fuel pressure (also observed when doing the current draw test)
dynamic fuel pressure delivery - testing while driving
secondaries test (you don't have to pull the plenum! See Marc Haibeck's page for proceedure)
accordion "snorkle" intake tube collapsing?? (needs Marc's "hoops" or a sleeve)
the TPS voltage smoothly transistions from idle to WOT?
Sorry to be acutely brief. Gotta run!
P.