Importing a blender model into blender

Hello, i was wondering how one goes about getting a blender model that they’ve already made and importing it into another blender file, here’s my situation (just so your clear what i want) about a week ago a created a character in blender. Then i created a landscape also in blender and I want to get my character into my scene.
thanks.

Shift+F1 to append an object from one blend file to another. This is not just limited to objects but to material, scenes, textures, particle systems, node groups etc
See here for quick tutorial http://cgcookie.com/blender/2010/07/12/tip-appending-and-linking/

Thanks richard, helped alot