I couldn't find a compiled list specifically for stormtroopers either.<br>
Best place to start making one would be through watching the whole Original Trilogy again a few times with a notepad and pen.<br>
Otherwise, IMBD usually have a fairly solid list of quotes for all three.<br><br><br>
This isn't from the OT but one or two of these gave me a brief internal chuckle.<br><br>
<a data-ipb='nomediaparse' href='http://starwars.wikia.com/wiki/Wookieepedia:Quote_of_the_Day/Archive/Stormtrooper?useskin=oasis'>http://starwars.wikia.com/wiki/Wookieepedia:Quote_of_the_Day/Archive/Stormtrooper?useskin=oasis</a>