I like the way Owen used graphical representation to help visualize different ranges. I had never seen that done before. I think it would be a good exercise for this thread for people to post hand histories and tell what they think their opponents range is.
An example of what I think is a polarized range on the river:
Merge - $0.10 NL - Holdem - 8 players
Hand converted by PokerTracker 3
BB: $15.80
UTG: $14.08
UTG+1: $18.98
MP: $10.00
MP+1: $10.00
CO: $22.38
Hero (BTN): $10.05
SB: $8.05
SB posts SB $0.05, BB posts BB $0.10
Pre Flop: ($0.15) Hero has 7<font color='black'>♠</font> 7<font color='black'>♣</font>
fold,
fold,
fold,
fold, CO calls $0.10,
Hero raises to $0.45, SB calls $0.40, BB calls $0.35,
fold
Flop: ($1.45, 3 players) 7<font color='red'>♥</font> 8<font color='black'>♠</font> 5<font color='red'>♥</font>
SB checks, BB checks,
Hero bets $1.25,
fold, BB calls $1.25
Turn: ($3.95, 2 players) 6<font color='red'>♥</font>
BB checks,
Hero checks
River: ($3.95, 2 players) 5<font color='black'>♣</font>
BB bets $1.00
Villain is 26/12/2 and I don't think he ever really leads the river with a marginal made hand (TP/small overpairs) as he's more likely to ch/call with those hands. So when he leads the river he's got air or a strong hand .