Happy Days/The Fourth Anniversary Special

The Fourth Anniversary Special
Season 5, Episode 23
Airdate	March 23, 1978
Written by	Bob Brunner & Samuro Mitsubi Contributing Writers Dick Bensfield, William S. Bickley, Bob Brunner, Dave Duclon, Ron Friedman, Fred Fox, Jr., Lowell Ganz, Roger Garrett, Joe Glauberg, Perry Grant, Dixie Brown Grossman, Bill Idelson, Walter Kempley, Brian Levant, Paul Lichtman, Michael Leeson, Fred Maio, Marty Nadler, Barbara Fredrika O'Keefe, Jerry Rannow, James Ritz, Mickey Rose, Mark Rothman, Arthur Silver, Howard Storm, Greg Stangis, Michael Warren, Michael Weinberger, Yvette Weinberger, Steven Zacharias
Directed by	Jerry Paris Contributing Directors Jerry Paris, George Tyne, Herb Wallerstein
Produced by	Jerry Paris, Bob Brunner Tony Marshall, Jeffrey Ganz
← 5x22 My Favorite Orkan	5x24 → Do You Want to Dance?
Happy Days — Season Five

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The Fourth Anniversary Special is the twenty-third episode of the fifth season of Happy Days, and the one hundred eleventh episode overall.

Starring: Ron Howard (Richie Cunningham), Henry Winkler (Arthur Fonzarelli)

Co-Starring: Marion Ross (Marion Cunningham), Anson Williams (Potsie Weber), Donny Most (Ralph Malph), Erin Moran (Joanie Cunningham), Al Molinaro (Al Delvecchio), Scott Baio (Chachi Arcola)

Also Starring: Tom Bosley (Howard Cunningham)

Guest Starring: Lynda Goodfriend (Lori Beth), Jack Dodson (Dr. Mickey Malph (archive footage)), Diana Hyland (Adrianna Prescott (archive footage)), David Ketchum (Coach Pelino (archive footage)), Dave Madden (Jack Whippett (archive footage)), Pat Morita (Matsuo "Arnold" Takahashi (archive footage)), Ed Peck (Police Officer Kirk (archive footage)), Laurette Spang (Wendy (archive footage))

Co-Starring: Talia Balsam (Nancy Croft (archive footage)), Jane Alice Brandon (Ann Louise Milligan (archive footage)), Tim Dial (David (archive footage)), Cindy Eilbacher (Betty Wilkens (archive footage)), Virginia Gregg (Mrs. Nestrock (archive footage)), David Zooey Hall (Herbie (archive footage)), Janice Heiden (Cynthia Kiley (archive footage)), Tannis G. Montgomery (Arlene Nestrock (archive footage)), Maureen McCormick (Hildie (archive footage)), Jenifer Shaw (Cindy Kendall (archive footage))

Featuring: Tita Bell (Trudy (archive footage)), Thomas Dever (Officer Porter (archive footage)), Charles Galioto (Angie (archive footage)), Richard Kuller (Charlie (archive footage)), Derrel Maury (Monk (archive footage)), James Van Patten (Sandy (archive footage))