imgres-3It’s that time of year again to celebrate Austin innovation, entrepreneurs and tech companies.

Austin Startup Week, which began three years ago – the same week as Silicon Hills News, is bigger and better than ever before. And this week features lots of fun and free events. If you haven’t registered already, sign up now so you don’t miss out.

Today’s highlights include Vintage Startup T-shirts – which has already got the Twittersphere buzzing with t-shirts from Ben Dyer, sporting a Peachtree Software Tee, Bob Metcalfe in a classic 3Com Tee and Joshua Baer in Dash and Other Inbox T-shirts. And Fred Schmidt with his Origin Systems T-shirt from 1981. The company, founded by Richard Garriott that started Austin’s gaming industry.

The big events for today include:

SXSW Eco Demos in Brushy Park, across for the Austin Convention Center, which is free and open to the public from 10 a.m. until 2 p.m. SXSW Eco, a conference focused on green tech and more, also kicks off today at the convention center.

Looking for a job? Look no further than the Built In Austin Startup Career Fair from 3 p.m. until 6 p.m. at The Mohawk, 912 Red River.

And don’t forget the opening party: the ATC Battle of the Tech Bands which runs from 6 p.m. until 10 p.m. at The Mohawk. Read more about the event in Susan Lahey’s story.