Most commonly I see people stay on a hand like A 5 6 because it appears to look like 21.
I had to hit a hard 20 once. Hard to believe the miracle story but I pulled the Ace. Why would I do that? you may ask. I was on the last hand of a tournament and the guy who was in the lead of me bet the same thing I bet so if we got the same result he would have maintained his lead. He got dealt a 20 and I got dealt 14. Dealer has a 4 showing. Well I had to get 21, only way for me to have a chance, I hit got a 6 making 20, and the dealer was about to pass me when I motioned for another hit. Here came the Ace. Dealer flips over a 7 making 11 and pulls 21. So I got a Push and the other guy lost giving me the win for the round. Unfortuneatly it was only the Quarterfinal, and I didn't make it to the final table. :(

