I dont know about you all, but some bands really do sound great live, further more if you are into certain bands you will appreciate this even more... check out
www.archive.org. I managed to find a show that i went to, it was a great way to get a lasting memory of a show... check it out and let me know what you think.
disclaimer*** this isnt ment to be a endorsement for this site, i just think its a sweet way to quickly get some live shows.