Steve Rudd has put together a great collection of resources addressing failed attempts at setting a date for the end of the world. You can find it here: http://www.bible.ca/rapture.htm
A great resource for general information about end time prophesies and a debate on premillennialism check out David Padfield’s site: http://www.padfield.com/debates/weiner.html
Jesus will come again at a time no one knows. While you shouldn’t give a lot of attention to such self-proclaimed prophets, we should alway be ready to meet the Lord.