"Those stodgy bastards at Oxford will have kittens when they here of this"
Okay, you wouldn't have thought there was many opportunities to use this one, but ask my friends, I use it!!
And "Yub yub commander"
Replaced "aye aye cap'n"
"Watch me care"
"Back in my day, Alderaan was a planet"
"May the force by with you"
"It's called coincidence"
Or, "it's not Excalibur" which I use whenever someone gets something wrong....