I've attached a couple of variations of the marquee.
As for the sideart my initial idea was something along the lines of the one below (trimmed to the sidepanel profile). But nothing has been decided yet.
I like the boldness and simplicity of the side-art, the marquee could use the same treatment. IMHO the marquee is too small to have characters populating it.
If I were you, i'd consider just having the Futurama title font and only The Planet Express Ship under it -- both centered. You could remove the caption completely too...to me, it looks a bit kitchy there. If you're stuck on having the caption, I'd recommend putting it on the CP.
I'd make your ship image big enough, to slightly overlap the title at the bottom (not completely blocking the title - connecting the silhouette so to speak). This would show off stronger with more clarity. It would also go well with the side art. You've already got Bender and Fry on the sides, you could have Leela or other characters featured somewhere on the CP, or on the Bezel (if you make one)...or not at all.
My only critique on the side-art is that you don't really need to have another Futurama title text there. I think it would read stronger if it were just the characters and the background. You could either remove it, or find a better way of incorporating it into the background image. Currently it just looks like you copy and pasted it in there at the last minute -- looks "tacked" on.
Just my silly opinion of course, take it for what it's worth.
I still love me them themed bartops!