Umphrey's McGee is the greatest. They're not a metal band as you might have guessed from the name, they're rock and jam band. They're kind of similar to Phish but are amazing and can play basically anything, and still keep their own originality. I might just seem like I'm glorifying them or something but seriously, they're amazing. They have hard rock songs, funky songs, country, blues, everything.
Check them out, see a show, buy "Anchor Drops" the album, and you will be amazed.
P.S. Their drummer is fantastic.