5-6 years ago I did karaoke all the time. It's a good time at the bar and is definitely entertaining.

Some of my songs were:
Pantera - Walk
Metallica - Sad But True
Metallica - Enter Sandman
Papa Roach - Last Resort
Avenged Sevenfold - Bat Country (if they had it)
Drowning Pool - Bodies (not often since I hate the song)
Staind - Mudshovel (if they had it)