Roller Coasters
I've ridden so many I've lost count. One of the first was the CYCLONE in 1949 at Coney Island NY, here are a few since

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Please NOTE the maximum G force recommended is 4.5, though some rides deliver more!
The First Looping ROLLER COASTER

Knotts Berry Farm
CA
1977
I believe it's gone!
Great Adventure
NJ
1981
I believe this one has been replaced by a newer ride.
Great America
Santa Clara
CA
American Eagle
1988
an old traditional style ride.
May also be gone!
Python 1997
Busch Gardens FL
Montu 1997 
Busch Gardens FL
Kumba 1997
Busch Gardens FL
Montu Entrance 1997
The Hulk 1999
Universal FL
Which way is UP!
Dueling Dragons 1999
Universal FL
Manhattan Express
Picture of me and my brother on the ride.
Feb. 2000
Desperado Feb. 2000
225 ft drop,
85 mph
5800 ft track
 What a rush!
Canyon Blaster in
The Adventuredome
at
CIRCUS CIRCUS
Las Vegas NV
Wild Adventure
Cheetah
.
The High Roller 
(Vegas)
Not too fast, but up at 1000 feet, it does give a little vertigo as you go 
ROUND & ROUND, 
the centrifugal force try's to force you out. 
Wild Adventure
The Hangman
Tower of Terror
MGM Studios
Disney World FL
Technically not a roller 
coaster but definitely neat!
Everything you wanted to know about Roller Coasters  &  Another coaster Site