IBNobody said:
The only bad part about being in the front seat is getting hit in the face by bugs.
I will spare you the motorbike stories and about the stag beetles the other night then (they hurt).
I love roller coasters as well. Actually drop slides, rope slides, flumes and everything like that
Favourite: probably pepsi max (Blackpool pleasure beach, UK) about 12 years ago. I was just big enough to ride and by happy coincidence we got a front row seat (no choice in the matter back then). At the time it was the biggest in the world (although it seems only by a month or so).
Others: whatever carnival/circus/funfair appears in or somewhere within reasonable driving distance of my hometown when I was there I generally went on. Alas I have yet to go on the ones in the other UK amusement parks (despite living but a short train ride away most of the time) and perhaps more to my shame in all the times I found myself in mainland/eastern Europe with nothing but time and money to burn.
I quite enjoyed one in Seattle about 8 years ago (no idea about the name but it was in the shadow of the needle), it was small but really threw me about which was nice.
Disneyland: I went on one that was in the dark in the same trip I did the one in Seattle and whatever else was there at the time. There is a good chance that I appeared at the other big California parks as well.
There was one somewhere in northern France about 6 years ago, no idea where or what is was called though.
And because I mentioned flumes there was a great one in New Mexico somewhere at a proper water park. My hearing is useless in general but the pressures involved meant I heard little but "static" for about 7 minutes.
Recently: It seems it has been several years since I last did anything that would be considered a rollercoaster or similar (stupid things with rope, "powered" roundabouts, cars/bikes and trampolines do not count in this case).