If you are using Mac or Linux there is avery good free program called Kdenlive that can do just about everything that the programs Ben mentions.
It can be a little trycky to get started but a lot of fun when it works. There is tons of tutorials on Youtube to get you started.
Hej Ben by the way kul med lite svensk flavor on the site. I am learning a lot from you and all the others so a big thanks for all the tutorials.
/Lars
Lars