Saw this on the Observer board, The Big Ol' List of Big Shoe Heel/Face Turns;
-Giant debuts in WCW as a heel.
-By mid-'96 he's suddenly a tweener, or a face. Who the hell knows. One week he was feuding with the Horsemen, the next week he was facing Sting.
-He was a face against a heel Hogan in their World title match.
-Giant turns heel and joins the nWo weeks after losing the World title to Hogan. August of '96.
-Four months later Giant is kicked out of the nWo. Face turn.
-Giant joins nWo Hollywood, thus turning heel in '98.
-January '99. The week after the Fingerpoke of Doom. Giant is kicked out of the nWo again.
-February '99, PAUL WIGHT jumps ship and debuts as a heel BY BREAKING THROUGH THE RING FROM UNDERNEATH when he interferes in Austin/McMahon cage match.
-A little after a month later he turns face by knocking out McMahon.
-4 months later he turns heel by tagging up with Undertaker.
-2 months & a couple weeks later Big Show turns face when Albert and Big Boss Man do the FATHER IS DEAD storyline.
-3 months later Big Show turns heel when Rock refuses Big Show's help against the New Age Outlaws, which pisses off Show and causes him to attack Rock.
-3 months later (Right after WrestleMania 2000) he turns face when he starts these impersonations of wrestlers.
-Big Show turns heel, by choke slamming Shane after Shane was recruiting guys to join WCW. This lead to the Shane/Big Show Last Man Standing Match at Backlash 2001.
-Three months later Big Show turns face when he aligns himself with Billy Gunn to form the Show Gunns tag team.
-Big show turns on Austin to join the nWo. April 2002.
-Big Show returns from injury as a face. 2004.
-Big Show is drafted to the new ECW and turns heel.
-Big Show returns at No Way Out '08 as a face, but it was only short lived before he attacked Rey Mysterio and turned heel.
-Two months later he turns back face during a Great Khali/Big Show feud. (Kinda by default really)
-Five months later he turns heel by saving Vickie from Undertaker.
-Big Show beats Jericho (captain of Team Smackdown) to earn a spot on Team Raw. Face tease. October 2009.
-Weeks later Team Smackdown beat Team Raw at Bragging Rights due to Big Show turning on Team Raw.
-April 2010 Big Show punches out Miz and turns face.
-The Big Show was drafted to the Smackdown brand (he turned face and made pals with SmackDown general manager Theodore Long)
- May 21, 2012 Big Show returns as a heel due to receiving John Laurinaitis' ironclad contract after Laurinaitis had previously fired him, and knocks out John Cena
- March 9, 2013 (face turn) Big Show helped Randy Orton and Sheamus against the Shield.
-At WrestleMania 29, Big Show, Sheamus, and Randy Orton lost to the Shield when Orton was pinned after stealing a hot tag from Big Show. After the match, a frustrated Big Show knocked out Orton and Sheamus for repeatedly refusing to tag him in the match.
-August 12, 2013 (face turn) Big Show returns from some time off to help Mark Henry and Rob Van Dam fend off a Shield attack
-October 6, 2013 after crying a lot from doing the McMahons' bidding to faces, he KOs Daniel Bryan in the main event of the Battleground PPV, a few minutes later he also KOs Randy Orton as the show goes off the air
-October 7, 2013 Big Show returns the next night and takes out the Shield and KOs Triple H.
-November 23, 2014 he is a part of the face Team Cena team taking on Team Authority. Turns on John Cena mid-match by KOing him and joins up with Triple H.