The most Epic Grasscity thread is the waterfall tutorial. 560 Pages of win. Starts with a dodgy Youtube Vid, and Ends with Miley Cyrus in tears. [ame="http://www.youtube.com/watch?v=vCuFMc7VNmA"]YouTube - Tutorial: How to make a Waterfall (Gravity bong)[/ame]
Theres a thread on Filefront with 7313 PAGES, at 10 posts a page that is 73,130 posts. Fuck it, sticky this thread and make it mandatory that everyone posts here on a daily basis so that GC can have the interwebs longest thread. Lol..
I thought this was pretty epic, though not the longest. \t Type in Google, "Worst possible "date" ever".