We have a bi-level (also called a hi-ranch or raised ranch). We put in a solid oak front door with a ribbed (think reeded glass) section encompassing most of the door. I don't have any pics on this computer, but will try to get some for you.

Just yesterday DH and I purchased a new entry door to replace our 22 year old 6 panel door. We went with a fiberglass door called "Santa Fe," and will be using two clear full glass sidelights. We live out in the country so privacy isn't an issue. We plan to stain the door to look like wood...
I wasn't sure either about what style to go for, but this door seems like it would work with several style houses. Our house is a one level ranch with horizontal vinyl siding and a hip roof.

The link below shows a very similar door to the one we purchased.

Here is a link that might be useful: entry door

Something simple. Just don't get one of those faux Victorian things with an oval and brass-leaded glass geraniums or something. The door cat mom describes sounds nice. You'll get light but maintain your privacy, and it will update the place.

I was thinking of a white mission style door - do you think that could work?

IMHO definitely Mission/Craftsman style...

It's simple and classic--and fits in well with ranch style homes.

When we replace the door on our rancher, that's exactly what we'll be getting.

There's a quite a bit of new construction of ranch-style homes where we live and they all have mission/craftsman style doors...