Speed 1 and Speed 2
You cannot deny that Speed is an awesome movie and has stood the test of time. You also can't deny that Speed 2 hasn't stood the test of time as being pure garbage and isn't a must watch based on how bad it is. Watch both But I still enjoyed Speed 2!
I own Speed on DVD, although I can't recall the last time I watched it.
It's awesome, BUT...
1. For someone familiar with the greater Los Angeles are and its freeways, the geographical inaccuracies and impossibilities are distracting. There is just no way in hell that a city bus gets from the Lincoln Avenue onramp to the 10 East to the 105 West** and (inexplicably) into LAX, all while maintaining a speed >50mph, in morning rush-hour traffic.
2. The bus jump -- as iconic as it is -- is so badly done. The gap in the 105, which didn't actually exist, is clearly shown as being a flat gap (i.e., the takeoff and landing points are at the same altitude) (0:12 of the video linked below). Although the freeway slightly inclines up shortly before the gap, it levels off at the curve right before the gap. Unlike Speed Racer's Mach 5, the bus is not equipped with any sort of mechanism that might aid in the jump. Nor is there a ramp at the takeoff point. At 1:06-1:08 of the video, it is clearly shown that there is NOTHING at the takeoff point. However, at 1:11, there is a pile of lumber shown at the takeoff point, and the front of the bus is miraculously propelled upwards at the 1:12 mark. This lift is so extreme that, at its apex, the front of the bus is a good 15-20 feet ABOVE the takeoff point. This lift, however, doesn't carry to the back of the bus, which actually drops -- significantly (1:14 of the video). Also, the bus clearly tilts to the right.
Thus, the reality is that the bus not only would never have made the jump, it wouldn't have come close and simply would have plummeted onto the ground below the gap in a fiery explosion (unless the crash itself disabled the bomb before it the wheels stopped spinning at 50mph+).
It was iconic and was a great moment on the big screen, but that particular bit of special effects never did withstand scrutiny. Since the gap was a creation of the special effects crew in the first instance, I don't know why they didn't lay things out differently so that the jump wasn't so obviously unrealistic.
** - Fun (or not so fun) fact: The childhood homes of the Wilson brothers (Beach Boys), Ron McGovney (pre-Kill 'Em All Metallica) and Richard and Karen Carpenter were all taken through eminent domain and destroyed for the construction of the 105.
https://www.youtube.com/watch?v=dKJa-KQNjQU