One I liked since I was a kid was Doc Brown in Back to the Future III. And I always got a kick out of Bill Murray fixing things just so in Groundhog Day.
Casino Royale when Craig/Bond orders/makes the drink during the game, then everyone else follows suit.
Silverado(my favorite western) - Danny Glover comes into the bar for the drink, they try to deny him, he beats the crap out of everyone in the bar, then finally gets the drink before being run out of town by the sheriff(John Cleese)
Same movie - In town, the toast between Kevin Kline and Linda Hunt - "To the good stuff"