My list is long due to the fact that I started seeing shows in the 1970's and went whole hog starting in 1994. And since I keep all my ticket stubs, here's my list going backwards (all are NY except where noted)--
1776
1940's Radio Hour
25th Annual Putnam County Spelling Bee
2 Gentlemen of Verona
42nd Street
Aida
All Shook Up
Altar Boyz
Amour
Annie
Annie Get Your Get
Apple Tree
Assassins
Ave Q
Bat Boy
Beauty and the beast (NY and Toronto)
Big
Big River (the Deaf West production)
Blast!
Blood Brothers (NY, London and Toronto)
Blue Man Group
Bombay Dreams (London and NY)
Boy from Oz
Boys from Syracuse
Brooklyn
Bring in 'da noise, Bring in 'da Funk
Buddy
By Jeeves
Camelot (New Jersey)
Candide
Capeman
Captains Courageous the musical
Caroline or Change
Carousel (New Jersey)
Carnival (New Jersey)
Cats
Chess
Chicago
Chita Rivera's The Dancer's Life
Cinderella
Chitty Chitty Bang Bang (NY and London)
Chorus Line
Civil War
Class Act
Color Purple
Company
Contact
Crazy for You
Curtains
Dance of the Vampires
Dessa Rose
Dirty Rotten Scoundrel
Dracula
Drowsy Chaperone
Eli's Coming
Fame (NY and London)
Fantasticks
Fanny Hill
Fiddler on the Roof (NY and Toronto)
Flower Drum Song
Follies
Footloose
Forbidden Broadway
Forever Plain (toronto)
Fosse
Full Monty
Funny Girl (New Jersey)
Funny Thing Happened on the Way to the Forum
Godspell
Good Vibrations
Great American Trailer Park Musical
Grey Gardens
Grease (the LAST revival, not the current one)
Gypsy (New Jersey)
Hair
Hairspray
High Fidelity
High Society
Hot Feet
How the Grinch stole Christmas
How to Suceed in business
Hundreds of Hats
I Love You, You're Perfect, Now Change (NY and Toronto)
Imperfect Chemistry
In My Life
Into the Woods
Jane Eyre
Jekyll and Hyde
Jesus Christ Superstar (NY and Buffalo)
Johnny Guitar
Joseph and the amazing....
Jolson the Musical
Jolson and Company
Kat and the Kings
King and I
Kiss of the Spider Woman
Kiss me Kate
La Cage Aux Folles
Last 5 Years
Lennon
Lestat
Les Miserables (Buffalo, Original NY and current NY revival)
The Life
Light in the Piazza
Lion King (NY and London)
Little Shop of Horrors
Little Women
Lone Star Love
Maddie (London)
Mamma Mia (London and NY)
Man of La Mancha
Man of No Importance
Marie Christine
Midsummer Night's Dream (music by the jazz group Groovelilly at Papermill)
Mimi Le Duck
Miss Saigon (Toronto and NY)
Movin' Out
Music Man
My Fair Lady (London, New Jersey)
My Life with Albertine
My one and Only (London)
The Musical of Musicals the musical
Needfire
Never Gonna Dance
A New Brain
Nine
Oklahoma
Oliver (London)
On the Town
Once around the sun
Once upon a Mattress
One Mo' Time
Our House (London)
Pacific Overtures
Pajama Game (London and NY)
Parade
Peter Pan
Pippin
Play On
Prince and the Pauper
Promises, Promises
Producers
POTO (NY, London, Toronto- total of 23 times)
Ragtime (NY, Toronto, New Jersey)
Rent (NY and Toronto)
Ring of Fire
Rocky Horror Show
Romeo and Bernadette (New Jersey)
Saturday Night Fever
Saturday Night
A Saint she Ain't (London)
Scarlet Pimpernel (versions one and two)
Seussical
School House Rock, Live!
She Loves Me
Show Boat (NY and Toronto)
Sidd
Side Show
Smokey Joe's Cafe
Spitfire Grill
Sound of Music
State Fair
Spamalot
Starlight Express (London)
Steel Pier
Stomp
Striking Twelve
Summer of '42
Sunset Blvd (NY and Toronto)
Swan Lake
Sweet Charity
Sweet Smell of Sucess
Sweeney Todd
Swinging on a Star
Taboo
Tarzan
Threepenny Opera
Thoroughly Modern Millie
Thou Shalt Not
Thunder Knocking on the Door
Tick, Tick, Boom
Time and Again
Titanic
Triumph of Love
Urban Cowboy
Urinetown
Victor/Victoria
Wedding Singer
West Side Story
Whistle down the Wind (London)
Wicked
Witches of Eastwick (London)
Wild Party
Wizard of Oz (Toronto)
Woman in White
Wonderful Town
We Will Rock you (london twice, toronto once)
You're a good man, Charlie Brown
Zanna Don't
Zombie Prom