· John McCain will appear on SNL tomorrow, playing what we hear is his uncannily dead-on impression of David Archuleta in a planned sketch with musical guest David Cook. Good on McCain for managing to stay up that late, assuming he does! [Variety] · Spider-Man 4 will be written by Pulitzer Prize-winning playwright David Lindsay-Abaire, giving this franchise a key into the snooty, UES-society-lady demographic that has been eluding it until now. [THR] · Samantha Who? gets a back seven order from ABC. [Variety] After the jump: Finally—an answer to your "Tatum O'Neal and Brigitte Nielsen starring in the same B-movie" prayers! Find out who else joins them.· Tatum O'Neal, Tom Berenger and James Brolin join Brigitte Nielsen and Moon Unit Zappa in Last Will, an indie suspense drama we're predicting might have been better off casting unknowns. [THR] · Bradley Whitford will star with Weeds's Romany Malco in NBC pilot Off Duty, a buddy cop comedy. [THR]