Biography
There are at least 5 artists of that name.
1) Phat aka James Cole, Czech MC from project "Supercrooo", one of best mc´s in the Czech Republic.
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2) Japanese jazz-electronic band
3) Norwegian Hardcore-metalpunk band. Started as a duo instrumental band in 2006, but included bass and vocals in the spring of 2008 - http://www.myspace.com/phatasinphat
4) French Free-Jazz trio (the original creator of this entry in last.fm) - http://boubaker.net/PHAT
5) Hungarian rapper from Bloose Broavaz.
Biography text from Last.fm, available under CC BY-SA.