Warren Simondson (remember him from last month) has created a web page you can use when testing the performance of Flash applications when delivering a web browser via Citrix or Terminal Services.
To the untrained eye, this might look like nothing more than an excuse to play space invaders all day. But if anyone catches you playing, be sure to point out the "Citrix" logo on the space ships. Tell them this application was specfically designed to stress the rigors of Flash via ICA or RDP. (And when they ask why you're playing it on your desktop and not via a server, tell them that you're establishing the baseline.)
You might want to also pull up a few articles about Flash performance via Citrix, so that when your coworkers ask what you're doing you can do a quick ALT+TAB to show them the research that you've found. A few suggestions:
Happy playing! (err... benchmarking)