Mix it up a bit. Get some other voiceover actors in there:
Christopher Walken
"So ... what we got ... here ... is this .... guy .... who's delivering a ... pizza. That's ... crazy ..."
Sir Patrick Stewart and Sir Ian McKellan
"Shall I commence narrating our ribald little tale, Ian? Or shall you do the honour?"
"Oh, by all means Patrick. Lead on."
"Very well then. Ahem. Our story begins in a small American suburb. Our erstwhile protagonist Chelsea returns home from cheerleading practice, and is now tasked with babysitting her twin sister Chloe."
"Babysitting?! A twin sister?! Really, Patrick, that whole idea seems a bit daft to me."
"Not so, old friend. In fact, I remember one season at the Old Vic, I had the privilege of workshopping our newest production of the Scottish play, with none other than Lynne and Vanessa Redgrave. Now, one evening, we ..."
"Oh god, Patrick, please don't finish that anecdote. I can barely look you in the eye as is."
Barack Obama
"Sooooo let me be clear. On one hand, we've got Ramon and Julio. The pool boys. Hardworking immigrants with a small business. An American success story. Then we've got Melissa. Frustrated hot housewife. Never ... even ... thought, she'd be in a threesome. But then it happens. We can bring people together. We bring Americans together. Yes we can!"