On Tuesday I joined the UT University Investors Association. I went to the info session, met a lot of intelligent, like-minded people and liked what they do.
I am also a member of Texas Entrepreneurs, a very active entrepreneurial society at UT.
The best part about these organizations is the people they attract. In a university of 50,000+ students, only the most motivated come to these meetings. They are not mandatory like classes, which automatically weeds out non-motivated people and they facilitate real world learning.