This will be the longest letter poll so far, almost 250 options.

1. Monk
2. Matlock
3. MacGyver (1985)
4. Mister Sterling
5. The Mentalist
6. Minority Report
7. Miss Match

Matlock
Melrose Place ('92)
Murder, She Wrote (probably my favorite drama of all-time!)

interested in seeing
MacGruder and Loud
Madigan
Magellan
The Magician (1973)
The Man from U.N.C.L.E.- one of my mom's favorite shows
Man in a Suitcase
Mancuso, FBI
Manimal- sounds like TV's version of Ladyhawke
Marcella
Masquerade- 1983 drama with Kirstie Alley and Greg Evigan
Max Headroom
McClain's Law
McCloud
McMillan and Wife
Mercury
M.I. High
The Millionaire- this sounds like a lot better drama than all the westerns of that era that have been played to death.
Misfits of Science
Missing Persons- ABC's version of Without a Trace a decade earlier
Mission: Impossible- I like Peter Graves in 7th Heaven and Airplane!
Moloney- sounds like a good pairing with Diagnosis Murder. Unfortunately it was no match for Seinfeld.
Moonlighting
Mr. and Mrs. Murder
Mr. and Mrs. North
Mr. Merlin- there is some dispute what genre this is. epguides.com says sci-fi, and my primetime directory says sitcom.
Mulligan's Stew- Suzanne Crough was in this family drama a few years after The Partridge Family. Presumably her character was used more here. It's too bad Mulligan's Stew only lasted 6 episodes. Elinor Donahue played the mother. It had stiff competition Tuesdays at 9:00 with M*A*S*H/One Day at a Time and Three's Company/Soap. would have had a better chance on Mondays after Little House on the Prairie.
Murder One season 2- starred Anthony LaPaglia and Ralph Waite
The Mystery Files of Shelby Woo
Mystery Science Theater 3000

Matlock
Macgyver(1985 version)
Miami Vice
Moonlighting

OH NO!!!! I forgot to vote for Melrose Place 92!

Marcus Welby MD, Murder she wrote, Mod Squad, Medical center , McCloud

Marcus Welby
The Millionaire