Look at our checkout form on http://systemdiscs.com/

In the expiry drop-down, we have all possible permutations:

1, 2, 3, ... 12; 01, 02, 03, ... 12; jan, feb, dec

and for the year 13, 14, ... 22 and 2013, 2014, ... 2022

Basically, I addressed my own pet peeve of never knowing what format the drop-down contents would be in and therefore never being able to select it via the keyboard correctly.

What I would really like would be some way of having all those permutations, but when the user actually clicks the drop-down (instead of keying in the stub) only one of those sets is displayed.