I've done quite a bit on campus. However, I'd also be quick to add that NOTHING has come close to my experience with greek life. Too bad it's not a requirment
I was involved in Circle K, the UCO Symphony Orchestra, Chamber Orchestra, Opera Orchestra, played in a band that won the UCO battle of the bands (fiddle).
Also was involved in Student Government, served in a leadership position in the student senate, was an anchor and reporter for the TV Station. Also, I was involved in PRSSA.
But nothing even comes close to Sigma Nu. Not even remotely.
Since I've graduated, I've had little/nothing to do with people from any of those other groups. But with Sigma Nu, I have a lifelong committment, and so far have been making good on it through my service and my money.
I could talk about things like brotherhood, etc.. and I don't want to sound like I'm "talking down" to Potential Rushees here. However, if you haven't experienced it, you just wouldn't understand.