Eggshell finish. It's got a very low sheen but is easy to wipe down with a damp cloth and has a velvety finish. Check with your local paint store and they can show you the difference.

if its wallboard use eggshell. if its wood use semi gloss. semi gloss would be preferred but it never looks right on wallboard... i've tried....

I agree with ninngret. Eggshell on the walls and ceilings and semi gloss on all the trim and doors.

Agree. Eggshell walls. Higher sheen on trim - satin or semi whichever floats your boat.