Not as good as the first, but a worthy sequel.

Rating: 7/10 (6 June 2010)

Although it doesn't surpass the first one, which is a hard task to do anyway, its still a powerful and brilliant sequel that excellently continues the saga. Filled with silly jokes and comical, and dramatic irony, with the same characters as the first, with a few twists, but are still all the more lovable.
Marty, Doc, and Jenny, Martie's girlfriend, travel to the year 2015 to resolve a conflict involving Martie's son. They return to the present time only to see that its a violent and mad world taken over by Biff, the bully in the first. Apparently while in the future, Marty bought a Sports Almanac, (a book showing the results of each sporting event in the 20th century) which Biff gets his hands on, turning him rich in the future. Marty and Doc go back to the year 1955 to redo the events in the first, and get the almanac from Biff, which he got from his future self.
The story gets a little confusing, but its well explained, and also shows to prove things as well. Some of the events were quite unnecessary, and the scenes back in 1955 kind of borrow from the first a little. But it still stays strong with the irony, with clever jokes and humor.
The doc remains his ordinarily crazy self, along with many other characters. Although there's no certain point in specific on where they stay on, it is definitely more adventurous and more agile.
Like I said before, not as good, but a positive and worthy sequel.