Generally, the words 'rap-metal' are enough to put most people off an album, mainly because of everyone's previous obsession with Limp Bizkit. That was like a booze-up...a good idea at the time, but you regret it later. The problem is, not all rap-metal is like that. 'Supercharger' has some of the best rap-metal songs around, most notably 'Crashing Around You', and 'All In Your Head'. The only problem is, it's just not what you expect from a band that made albums like 'Burn My Eyes', and the even more excellent 'The More Things Change'. Traditionally (if that's the right word), Machine Head are a bangin band, songs like 'Ten Ton Hammer', 'Take My Scars', 'Davidian' etc proved that, then there was 'The Burning Red' that was leaning towards rap-metal, but still had the old style songs in there, but 'Supercharger' has all but scrapped it. 'Bulldozer', the first song, kind of starts in the way you'd expect Machine Head to be, until the singing starts. The same can almost be said for 'White Knuckle Black Out', arguably one of the better songs on here. But from there, it's almost all rap. And the scratcher on 'American High' was definitely NOT a good move. 'Trephination' seems to be just a re-vamped 'Silver' (from 'The Burning Red'), and there's 'Deafening Silence', a strangely mellow song, that seems to have taken the place of the song 'The Burning Red'. If you have the DigiPack, there are some good additions to it (although mine has a live 'Desire To Fire' instead of 'Rat Race'). 'Hole In The Sky' is a good song, and has a good short drum solo in it. Basically, this album is very good for anyone willing to accept that there is rap-metal beyond what gets in the charts, but if not, and you were a fan of Machine Head's previous three inputs, and hoping for more songs as utterly fantastic as 'Take My Scars' etc, there's disappointment all round. And possibly a four star rating is slightly over-rating it, but that can't be helped, coming from a die-hard Head fan.