It's another year of zany sketches and belly laughs. The 34th season of "Saturday Night Live" kicks off with Olympic swimming gold medalist Michael Phelps as host and Tina Fey appearing as Republican vice presidential candidate Sarah Palin. Guest hosts include former "SNL" cast members Steve Martin, Tracy Morgan and Will Ferrell, pop star Justin Timberlake (who does another pretaped digital short with Andy Samberg) and actress Anne Hathaway.