What do you think are some of the most under-appreciated, rock and metal bands? I'd have to say the band King's X. They were very influential on 90s bands such as Soundgarden, but have not gotten a fraction of the attention they deserve. Also the band Voivod. Fantastic, innovative thrash metal/progressive metal hybrid that never seems to be listed among the greatest heavy metal bands.

Check out my manga podcast:
https://youtube.com/channel/UCr0Us8mMIpX3x0pOud2AUWg

As a music connoisseur, here is my list. Generally everything with a 4 or higher is worth checking out.

http://www.sputnikmusic.com/uservote.php?memberid=428646

yeah, check 'em out. ALL OF THEM