So many good drivers; just not enough seats to go around.

Jan Magnussen comes to mind but for different reasons. SOooooo quick in every other series. Got that one of ride at the Pacific GP in '95 as was anonymous in the mid-field. He was driving a bucket of a mac though so I expected him to show more in his full time seat at Stewart - but sadly he just proved not up to the challenge.

We could also have an equally long thread of pants drivers who did make it to F1 - Michael Andretti anyone