Google just introduced an experimental view of search results that identifies dates embedded in webpages and shows you a timeline of when these pages say the relevant events occurred.
Below are searches for a few events in the Bible. Obviously the timelines reflect divergent opinions on when the events occurred.
Jesus’ Birth
The current consensus seems to be sometime in 2 B.C.
Jesus’ Crucifixion
The year A.D. 30 is the clear leader here. Notice how most of the bars in the first few months of the year, which you’d expect if the Crucifixion coincided with Passover.
The Exodus
Here you see the two main datings of the Exodus: the 15th century and the 13th century B.C.
Via Searchblog.
Update February 2016: At some point, Google discontinued this offering, so the above links to Google no longer work.