Maybe my favorite issue of any comic ever. Mainly for nostalgic reasons right now, but I bet it holds up. It was a brilliant premise. The Avengers were sent back in time, where they took on roles throughout history. Hawkeye became Robin Hood and fought the Black Knight (Iron Man). Captain America was esnt back to World War II. Thor was battling with the Norsemen who imagined him, etc., etc. Great story. Great fun.
More favorite issues to come, as I find them on the web. (Or on my Avengers DVD-Rom.)