sorry to jump on your thread Char, but this happened to me in a SnG last night. I think it pretty much highlights what you're saying ...

Now, the CO in this hand had been min-raising pretty much the whole way through this tournament. Lots of hands raised, but always a min-raise. If the CO raises to 450 preflop, I am done. I can't call this. The SB (an FTRer himself) calls from the SB which further opens up the opportunity for me to do this in the BB because I am now being offered 5:1 to call this, which, with the size of my stack, I am prepared to do.

PokerStars $20+2 No-Limit Hold'em SnG, Big Blind is t150 (6 handed)

SB (t1965)
Staresy (t4090)
UTG (t1310)
MP (t2845)
CO (t2625)
Button (t665)

Preflop: Staresy is BB with 5 3
2 folds, CO raises to t300, 1 fold, SB calls t225, Staresy calls t150.

Flop: (t900) K 3 3
(3 players)
SB checks, Staresy checks, CO bets t150, SB folds, Staresy calls t150.

Turn: (t1200) 7
(2 players)
Staresy checks, CO bets t250, Staresy calls t250.

River: (t1700) 4
(2 players)
Staresy bets t750, CO raises to t1500, Staresy raises to t2250, CO calls t425 (All-In).

Final Pot: t5875

What happens? CO shows AK and loses his stack which he could have avoided simply by adding a little more (as little as 150-200) to his pre-flop raise.