If you have a memory card you can just drag music and videos onto the card in the right folders and your all set. Another thing i found is the site videos 4 bb, they put tv shows and movies on line in either 3gp or avi format. you can download them for free!! just right click and save! Then just drag it to you memory card! If you click on the link it will just start playing. There is tons of videos on this site including jackass 2.5!
http://videos4blackberry.info/joomla/index.php