This 1957 version, starring a wonderful Kirk Douglas as Doc Holliday, is great. What I didn't know beforehand is that Earl Holliman (Wheat) is also in this movie! He was so young, though, that I didn't recognize him and it wasn't until the credits rolled at the end that I learned who his character was (a deputy).
So then I went back and watched his scenes again and I could see a faint resemblance to Wheat; his voice, however, once I was listening carefully, was the same. I don't think I need to recount the plot here; suffice it to say that Gunfight at the O.K. Corral is definitely worth watching.