The fifth season (2002-2003), starring Ashton Kutcher, Laura Prepon. opens on a cheerier note, with Donna and Eric (Topher Grace) reuniting after the latter also travels West to declare his affections. Their dramatic progress of their relationship forms the crux of season 5, but if that sounds too heavy for you, don't worry--there are plenty of wacky situations on hand involving Fez (Wilmer Valderamma), Hyde (Danny Masterson), and the rest of the retro gang. The Eric/Donna story arc moves quickly from a promise ring ("Ramble On") to an unplanned engagement ("Hot Dog") and the discovery of said union by Eric's parents, Red (the always-terrific Kurtwood Smith) and Kitty (Debra Jo Rupp, who is consistently excellent), which results in considerable rancor in the Foreman household. Eventually, marriage appears to be the destination for Eric and Donna, but first, there's graduation to deal with ("Celebration Day").