Does anyone know of any other discounts?

Of course the biggest discount is just that by not owning a car, one can save about $8000 a year, or $2 million over a working life with interest.

Enjoy being a part of the Austin cycling community AND get these great member benefits:
$20 gift card to Bicycle Sport Shop (for new members).
20% off of accessories, parts and labor and discounts on select bikes at Cycleast
15% off accessories and 5% off bikes at University Cyclery
10% off at Austin Tri Cyclist
10% off at Clown Dog Bikes

Also, our neighborhood LBS, Bikealot gives discounts to cyclists.
I believe it is 10% if shopping by bike.
And a little known, little used discount of I believe 20% off if car free.
Nice Stand in our neighborhood.

$100+ year for Transportation User Fee exemption.  If your household doesn't own or drive a car, you get a discount from the Transportation User Fee that appears on residential utility bills.  This isn't technically for bicyclists, it's for car-free people.  Clam your exemption by calling Austin Energy at 494-9400.

$2 off at Unit-D Pizzeria [CLOSED] at 2406 Manor Rd., 524-1922.  The Chronicle reports, "Response from the neighborhood has been...so enthusiastic on some nights, in fact, that potential diners [at the three eateries located in the center] end up competing for parking spaces. No wonder Unit-D offers a two-dollar discount on pizzas to guests who arrive on bikes."