I've hit a K-high spade straight-flush playing a table game at a casino, but never hit one in Hold'em. However, I have dealt one and it was very early in my dealing career (and apparently, very early on in a player's playing career).
I was the designated dealer for a home game tournament and the second hand of the night, I flopped (I forget what pre-flop action was, but it was minimal). After the flop, SB bet, BB raised, two players (including button) called, SB called. The turn was . SB bet, BB moved all-in, everybody called. The SB had , BB had , one player had (I have no clue why he called), and button had for the royal flush. I'll never forget, he never once bet the hand, just called, and took out two players and all but eliminated a third (one of the three players had won first hand, I forget which).
At the time, I didn't know how rare it really was. I've dealt a lot since then and have never dealt another one, never caught one, and I believe I've only seen one hit at one of my tables, but been around a couple times when one hit at another table.
I was the designated dealer for a home game tournament and the second hand of the night, I flopped (I forget what pre-flop action was, but it was minimal). After the flop, SB bet, BB raised, two players (including button) called, SB called. The turn was . SB bet, BB moved all-in, everybody called. The SB had , BB had , one player had (I have no clue why he called), and button had for the royal flush. I'll never forget, he never once bet the hand, just called, and took out two players and all but eliminated a third (one of the three players had won first hand, I forget which).
At the time, I didn't know how rare it really was. I've dealt a lot since then and have never dealt another one, never caught one, and I believe I've only seen one hit at one of my tables, but been around a couple times when one hit at another table.