Happy Birthday to country singer Billy Gilman (1988), rapper Heavy D (1967), "Boogie Nights" star John C. Reilly (1965), "The English Patient" actress Kristin Scott Thomas (1960), country singer Rosanne Cash (1955),

Every so often, there comes a shocking or unexpected moment in a television series that leaves the show forever altered. These show-changing moments are not simply unique plot twists or ambitious story arcs; they are episodes or scenes that ultimately prove to be watershed moments for the series in which they occur.

Happy Birthday to country singer Billy Gilman (1988), basketball star Tracy "T-Mac" McGrady (1979), rapper Heavy D (1967), "Boogie Nights" star John C. Reilly (1965), "The English Patient" actress Kristin Scott Thomas (1960), country singer Rosanne Cash (1955), "The Da Vinci Code" actor Alfred Molina (1953), "The Chronicles of Narnia: The Lion, The Witch And The Wardrobe" actor Jim Broadbent (1949), actress Priscilla Presley (1945), Lady Marmalade singer Patti LaBelle (1944), "M*A*S*H" actor Gary Burghoff (1943), legendary singer/songwriter Bob Dylan (1941), and Canadian actor/comedian Tommy Chong (1938).