Off the top of my head:
* Caviar in int'l F
* 747SPs on the SFO-LHR run
* Sh!ttle by United
- fortunately I always managed to get an F seat on those planes
* Frappucino
* RCC luggage tags (still have one - the other one got broke by UA's baggage handlers a couple of years ago)
* Connoisseur Class, not United Business
* Paper SWUs
* United Connection R.I.P.