For my birthday this year, my parents got me a new front door. Our door had irritated me since we moved in because it was the wrong direction for the opening (light switches and door stop were on the other sides), had no window or peep hole, and we have no windows on that side of the living room at all, and it was just completely blah. It was a plain synthetic door painted the same color as the interior of the house on the inside and the same color as the exterior on the outside.
The new door that we chose is a lovely natural wood, has a dentil shelf, three window panes, and two panels. It was fairly inexpensive compared to other wood doors that look similar to it because the local giant hardware/lumber/home goods store (Jerry's) buys this particular model in larger quantities and stocks them. The price was more than $100 less than what we would have paid at Lowe's or Home Depot.
This is the old door, out of the frame.
This change inspired us to finally paint the living room, which is something we'd been thinking about since we moved in. Now that project is almost done (new trim is still going up), so I'll try to post photos of that soon.