Acclaimed and Emmy-nominated producer Leslie Greif is one of the most prolific figures in the entertainment industry. Over the past 25 years, Greif has been known for creating, writing, directing and producing numerous critically acclaimed projects. Founder and CEO of Thinkfactory Media, Greif has one of the only production companies that has created and produced award-winning programming across various arms of television including: features, unscripted series, documentaries, mini-series, branded entertainment projects, concerts, music specials and various movies of the week.

Greif has a tremendous amount of versatility and production experience, and is a top creator of high quality entertainment content. In the world of television, he quickly established himself when he co-created and executive produced 204 episodes of the CBS runaway hit series, Walker Texas Ranger starring Chuck Norris, which is still enjoyed by fans around the world. Greif was also responsible for producing documentaries on some of America’s most notable motion picture stars of the 21st century, including Steve McQueen: The Essence of Cool and the highly acclaimed Brando, starring Al Pacino, Johnny Depp, Martin Scorsese, Sean Penn and Robert Duvall. Brando aired on TCM, and opened both the Cannes and Tribeca Film Festivals in 2008. The documentary garnered Greif an Emmy nomination for his work.

Greif has produced TV movies, series, mini-series and specials for all major networks including HBO, ABC, CBS, FOX, TNT, A&E, Lifetime, Discovery and USA.  Most recently he was the driving force behind his 30 year passion project, the three night mini-series event, Hatfields & McCoys (History), which has become the television sensation of the decade, garnering 16 Emmy® nominations, including a nod for Outstanding Mini Series or Movie.  Starring Academy® Award winner, Kevin Costner and Golden Globe® nominee Bill Paxton, the mini-series made cable television history on night one with over 17 million people tuning into the premiere and encore telecast.  All three nights of the mini-series rank as the top three entertainment television telecasts of all time in ad supported cable history among total viewers and the Adult 18-49 impressions average make it the highest rated mini-series or movie on cable since 1998.  In addition, Greif produced a two-hour documentary on the history of the Hatfields & McCoys which also aired on History along with a one-hour behind-the-scenes/making of mini-series that debuted online.

Greif is also responsible for creating, Gene Simmons Family Jewels (A&E), now in production on its seventh season, making it the longest running celebrity docu-series in television history.  His other credits include, R&B Divas (TVOne), Prank My Mom (Lifetime), Mounted in Alaska (History Channel), Sinbad: It’s Just Family (WeTV), Chasing Mummies (History Channel) Unleashed: K9 Broward County (TLC), Operation Wild (Planet Green), Tony Danza: Teach (A&E), Eddie Griffin: Going For Broke (VH1), Battleground Earth: Ludacris Vs. Tommy (Planet Green), Rookies (Bio), Kissteria (A&E), as well as 65 episodes of Lifetime’s Intimate Portraits.

In addition to all his television work, Greif has produced and directed a number of feature film projects including the hilarious comedy, Funny Money starring Chevy Chase, Penelope Ann Miller and Armand Asante. He also directed the critically acclaimed film Keys to Tulsa, an offbeat noir mystery with an illustrious cast that included Eric Stoltz, James Spader, Cameron Diaz, James Coburn and Mary Tyler Moore. Greif also produced New Line Pictures cop drama Heaven’s Prisoners, starring Alec Baldwin and Teri Hatcher; as well as the Rodney Dangerfield farce, Meet Wally Sparks, which also starred Burt Reynolds. His movie of the week credits include Monday Night Mayhem starring John Turturro, Word of Honor starring Don Johnson, and Baby for Sale starring Dana Delaney.

For his newly minted Thinkfactory Films banner, Greif is developing two high profile feature films: Pound for Pound, is based on the F.X. Toole acclaimed novel which Ron Shelton adapted for the screen and will direct. In addition, Greif wrote and directed, Sleeping Around, an independently financed comedy starring Wendi McLendon-Covey (Bridesmaids), Michael McKean (Spinal Tap, Best in Show), Tammin Sursok (Pretty Little Liars), Virginia Williams (How I Met Your Mother), Bryan Callen (The Hangover), among others.