In 2008 it was Sanath Jayasuriya with 31 sixes.
In 2009 currently the man with the most sixes is Mathew Hayden with 17 as of now...
Chris gayle is the batsman who has hit maximum sixes in IPL.
Chris Gayle hit maximum sixes in the ipl season 2010
Sanath jayasuriya hit maximum sixes in the opening season of ipl
Chris Gayle hit most sixes in 2010
Chris Gayle has hit maximum sixes in the ipl league
506 sixes were been hit in IPL 2009.
Adam Gilchrist of Australia with 100 sixes
English bowler Stuart Broad made Yuvraj Singh to hit six sixes in a row.