folkinz made a list of folks he thinks have a real shot at earning EGOT status. I'm not sure anyone belongs on this list if they have only won one of the four (Emmy, Grammy, Oscar, Tony). Obviously Bette Midler and Lily Tomlin are the favorites having won 3 of the 4 needed, but also because it's not impossible to imagine them winning Oscars (you know, in the way that it's impossible to imagine Gwyneth Platrow winning a Grammy)

# cher (E, G, O)
# jamie foxx (G, O)
# catherine zeta-jones (O,T)
# jennifer hudson (G, O)
# lily tomlin (E, G, T)
# gwyneth paltrow (O)
# kevin spacey (O)
# nicole kidman (O)
# renee zellweger (O)
# scarlett johansson (T)
# anne hathaway (E)
# joaquin phoenix (G)
# reese witherspoon (O)
# hugh jackman (E, T)
# justin timberlake (E, G) oscar may be a stretch i know.
# meryl streep (E, O)
# bette midler (E, G, T)

Incidentally, there have been 12 EGOT winners (or 10 if you're a stickler).