Mike Bridenstine and Mike Holmes Do Every Song Ever of Eminem, Red Hot Chili Peppers, The Beastie Boys and Green Day

As far as song parodies/medleys go, Mike Bridenstine and Mike HolmesEvery Song Ever cover band is pretty amazing. 

Watch this performance of how they succinctly parody the catalogs of Eminem, The Red Hot Chili Peppers, The Beastie Boys, and even Green Day.