Assuming you like Coop, you will probably very much love to hear that there is a Coop Mod for the Medal of Honor Games, Allied Assault, Spearhead and Breakthrough!
If you have not tried it out yet (profile on moddb.com), you really should, especially if you like old games, this sure is worth playing. Creating a server and starting a coop session is fairly simple and can provide you with hours of fun.
I really recommend it to you. And if you should have any difficulties (installing, playing, or otherwise), you can also report them to me, the scripting is similar to the scripting of ef2 and as I plan to make a small installer for this great Mod any input is welcome.