It seems like a lifetime since Billy Crystal last tap-danced across our TVs to host the Oscars. Actually, it’s been only a year and a half (tough to remember in light of Seth MacFarlane’s sour turn). Still, the affable funnyman has been missed of late, despite lending his dulcet tones to Monsters University. Crystal comes back with two autobiographical projects this fall: a book titled Still Foolin’ ’Em: Where I’ve Been, Where I’m Going, and Where the Hell Are My Keys? and a revival of his 2005 Broadway show, 700 Sundays. Tonight he discusses those and more with fellow legend Whoopi Goldberg.