Now one of the main crossovers was when Spike left Buffy and went onto Angel. Now we all knew this had to happen sooner or later with the rivalry between Angel and Spike never ending. So you know there is going to be a lot of violence and fighting during this one but the question is who will come out on top. Spike goes in order to torture Angel using methods which would cause him a lot of pain mentally and physically.

Now this was probably the greatest crossover not only with Buffy and Angel but for the whole of television. Buffy goes to see Angel after finding out in "Pangs" that he visited Sunnydale but did not want Buffy to find out. However Xander accidently mentioned it and so Buffy wanted to go and find out why he did this. However Buffy got a whole lot more than she bargained for. When Angel gets the blood of a demon on him and it brings him back to life. Buffy and Angel share moments which before they could only of ever dreamed about.