Today, my girlfriend and I went to Howard's of Mount Vernon (900 Cathedral St.) because we wanted pancakes.
We just recently discovered that this little diner has the best pancakes in Mount Vernon, possibly all of Baltimore. I'm not sure if I can remember having better pancakes anywhere in the city or really anywhere. They're pretty much the Platonic ideal of pancakes, a little crisp on the outside, fluffy and light on the inside, served with real butter and maple syrup at a reasonable price. I'm especially excited to visit some time in the spring, they have courtyard seating during the warmer months.
Looks like there's a reason on only just noticed them - the Baltimore Sun has some history on the changes in ownership.