To avoid the spectacle of a coin flip (also, I don't carry coins!), I do the geeky thing:

  - Take the first printed word I see
  - Sum the letters' ordinal positions ("ramen" == 18+1+13+5+14 == 51)
  - Calculate modulus X for one of X choices (51 mod 3 == 0)
  - Select option index Y, ordered visually, geographically, temporally, or alphabetically as appropriate, sometimes in reverse to be ornery (["alice", "bob", "eve"][0] == "alice")

And Alice is the winner.

...

If I'm with another person who also can't decide, I skip the first two steps by asking them for a random number between 1 and (a random two digit number).

Then I just tell them whatever my secret preference was all along, and we watch the good movie together happily.

Kidding about that last part. All movies suck.