YouTube continues to be a wonderland of great musical clips:

• Peter Gabriel (and the voice of the late, great Nusrat Fateh Ali Khan) with "Signal to Noise";
• Two robots (!) play Gnarls Barkley's hit "Crazy" on improvised percussion and a theremin;
• Darth Vader plays the blues;
• Buddy Rich on The Muppet Show;
• They Might Be Giants (who have their own YouTube account, as "ParticleMen") celebrate Brooklyn;
• and a trio of great Elvis Costello recordings:  his cover of Christina Aguilera's "Beautiful"; a gorgeous acoustic version of "Rocking Horse Road"; and a nicely shaggy cover of Manfred Mann's "Pretty Flamingo" with Nick Lowe, Squeeze's Glenn Tilbrook, and some others.