Here's a great way to kill a half hour. "Weird Al" Yankovic's Ridiculously Self-Indulgent, Ill-Advised Vanity Tour saw him mine deep parts of his original catalog. Plus he played a straightforward cover at every encore.
He's assembled a 26-minute supercut with audio from all 77 covers he did on the trek and posted it on YouTube, and they're all remakably preety not bad! It starts with Deep Purple's "Smoke on the Water" and then hits snippets of songs from Elvis Presley, The Beatles, The Clash, Jet, Smash Mouth, Neil Young, Elton John, Tommy Tutone and many more.