I actually think it was cardman's intention to check-call it down to the river and the bet the pot there. It would be difficult to call that.
fair point..indeed the guy was either the biggest fish around or he was always planning on making a play on the river and just happened to hit the straight.
Look at this hand. I think you are giving him way too much respect!!
*********** # 50 **************
PokerStars Game #6094064588: Tournament #30881146, $20+$2 Hold'em No
Limit - Level IV (50/100) - 2006/08/29 - 10:35:14 (ET)
Table '30881146 1' 9-max Seat #6 is the button
Seat 1: rimbo222 (2793 in chips)
Seat 3: rinaldo76 (940 in chips)
Seat 4: mjtr (2085 in chips)
Seat 5: EugeneE (700 in chips)
Seat 6: cardman82 (3432 in chips)
Seat 7: el_pedrin0 (2050 in chips)
Seat 9: A-1stud (1500 in chips)
el_pedrin0: posts small blind 50
A-1stud: posts big blind 100
*** HOLE CARDS ***
Dealt to mjtr [

]
rimbo222: calls 100
rinaldo76: folds
mjtr: raises 150 to 250
EugeneE: folds
cardman82: calls 250
el_pedrin0: folds
A-1stud: calls 150
rimbo222: calls 150
*** FLOP *** [

]
A-1stud: checks
rimbo222: checks
mjtr: bets 500
cardman82: raises 2682 to 3182 and is all-in
A-1stud: folds
rimbo222: folds
mjtr: calls 1335 and is all-in
*** TURN *** [

] [

]
mjtr said, "outdraw"
mjtr said, "Q"
mjtr said, "Q"
mjtr said, "Q"
*** RIVER *** [

] [

]
mjtr said, "booo"
*** SHOW DOWN ***
mjtr: shows [

] (a pair of Jacks)
cardman82: shows [

] (a pair of Jacks - lower kicker)
mjtr collected 4720 from pot
*** SUMMARY ***
Total pot 4720 | Rake 0
Board [

]
Seat 1: rimbo222 folded on the Flop
Seat 3: rinaldo76 folded before Flop (didn't bet)
Seat 4: mjtr showed [

] and won (4720) with a pair of Jacks
Seat 5: EugeneE folded before Flop (didn't bet)
Seat 6: cardman82 (button) showed [

] and lost with a pair of Jacks
Seat 7: el_pedrin0 (small blind) folded before Flop
Seat 9: A-1stud (big blind) folded on the Flop