Since I've started working at this newspaper, I can't stop using Nobel, but that's only cause I see it all day when I work. - tehKenny

Tahoma. Gill Sans. Adobe Myriad. - Akiva

I actually like the new MS default "Calibri" quite a bit. - Fried Curdys

trebuchet - Friar Will

Tahoma, Century Gothic - Bren

We use Trebuchet MS as the default font of choice in all our elearning productions. - Brian Sullivan

Tina, this is a compact font suggestion list: http://www.typographyforlawyers.com/... (not limited to san-serif, mind you). - Micah

Calibri and Consolas looks neat - AJ Batac (/-_-)

I'm partial to Verdana. - Rene, Pro Button Pusher

Verdana - John (bird whisperer)

Verdana - Scoble, Alex Scoble

Verdana, then Tahoma, then COMIC SANS! (not really) - caj

Droid Sans - Steve and 3 other people

For day to day usage: Tahoma - xero

Trebuchet, but I'm still not sick of Lucida Grande - Victor Ganata

Adobe Myriad, MS Calibri. - Anton

I like Decker and Calibri. - Jimminy, CoG of FF

Verdana and Cambria( Just found out that Cambria is not sans serif). - Ashish

Calibri and Consolas and Myriad and Droid Sans and.. - Mo Kargas

Also Verdana. Comic Sans when I'm feeling particularly flashbacky. - Arlan K.

Comic Sans - Jeff P. Henderson

+Anton. Also there are some i've downloaded from font-squirrel that I've yet to investigate thoroughly that I like a lot. And I went through a period of being obsessed with the Neutraface family from House Industries. It was a decent deal considering how many weights I got - maybe 30? - but I also felt I wanted to use the hell out of it after paying almost $300 for the whole family - the only way it really came. - Mary B, VALUE author

I like Mr. Eaves Sans. It's like Gill Sans with a bit more style and warmth, especially in the italics. http://www.emigre.com/EFfeatu... - Kevin Fox

Helvetica Neue. - Meryn Stol

Gill Sans for me. - Hiding in Two Corners

optima - marthalib

Myriad Pro - I couldn't live without it. It's my #1, go-to font. - Nathan Chase