As a presenter, I use the /fs switch on Visual Studio quite often. It makes the product come up with larger fonts in Solution Explorer and other “chrome” that you can't control with Tools, Options. If you present, do everyone a favour and use this switch yourself. Also change your highlighted text from white-on-darkish-blue to black-on-yellow and crank your editor fonts to at least 14 points.
Well, Scott Hanselman alerted us all that the /fs switch is gone in Whidbey and urges us to vote on the importance of this omission. It's not just about speakers, it's about accessibility. My firm has done quite a bit of accessibility work, and we're sensitive to it. How can one team be changing ASP.NET so it emits accessible HTML while another removes a working switch that wasn't hurting anyone and that made programming feasible for someone with low vision? It must just be an oversight, right? Well give the bug a vote and the oversight is more likely to be corrected.