I absolutely loved Uncle Sams in Pittsburgh. As an undergrad. nothing hit the spot better than a greasy steak sandwich with extra greasy fries (in a good way). This place is tucked away on a side street but they make great stuff. If i ever had a rough day or was starving this was my go to spot.
The steaks are cooked right in front of you and the aroma from the grill lifts you off your feet. For around $10 you can get a full sub and fries. The fries are always glistening with oil but are pretty good. Eating here with definitely give you the "meat sweats".
There are quite a few tables inside so it's good for groups or to eat in duos/solo. It can get a little hot in there so i'd advise dressing light or taking it to go (if you can hold out from the smell)
Definitely a go to spot if you're in Oakland and want a true hit your stomach hard steak sandwich.