NBC could make a last-minute substitution for tonight’s episode, in deference of this week’s death of former Saturday Night Live cast member Jan Hooks – but I hope the network proceeds as planned. That’s because this long-scheduled prime-time SNL Encore show, originally broadcast in late night (and in longer form) on April 21, 1990, featured Hooks prominently, and very effectively, with her playing not only Greta Garbo, but a sassy waitress who serves Baldwin at a diner. It’s also the first appearance as host by Alec Baldwin, who currently holds the SNL record, having hosted 16 times to date. The B-52’s are the musical guests, and if NBC doesn’t cut him out, watch for then-staff writer Conan O’Brien in a cameo appearance.