Amon Amarth happen to be a highly rated personal favorite of mine, their best album has to be "Versus the World", I really dig the song 'Where Silent Gods Stand Guard'... Gives me shivers every time i hear it, just makes me want to thrash until I collapse
Vaginal Jesus is pretty alright I suppose, I can't take them too seriously, but I reckon the music isn't to be perceived as such by intention. Fun music none the less. I really find Dying Fetus interesting, always have, but haven't ever really looked into them too far bar an album or two. I hear they are accused of too similar of 'rapping', lyrically. As well how big of 'wiggers' they supposedly are. I do enjoy them though, they make good music in my books.
Although my taste does not solely pertain to the death metal side of things. I really do Enjoy every other subgenre of Metal besides the Metalcore/Deathcore portion of tunes.
Tell your friend to post here sometime, we could exchange videos and create an official 'Heavy Metal' Thread. It'd be even cooler if he plays on our server
But I'm guessing he isn't a WoWer though. heh