http://www.flopturnriver.com/blogs/f...s-marchase-130

Now I know this guy isn't "big name." But if you need motivation to go take a look, go no further than these results for 30k hands.
http://img474.imageshack.us/my.php?image=88kdy1.jpg

Here's an excerpt from the interview:
Until after playing HU, when playing 6 max I never really took into account bet sizing, timing tells or things like that nearly as much so I guess playing HU just made me more aware of the flaws in my game and the flaws of playing sessions in “robot mode” and just defining people at a 21/16 who 3-bets light. Rather than a tricky tag who 3-bets light; a tricky tagg who calls 3-bets a little to wide, gives up in 3-bet pots easily and likes to float dry boards in position.