This is a shrub I planted several years ago, long enough to have forgotten the name, and this is the first time it has produced blooms. It's blooming right now. These pictures were taken November 5th.

It has pretty bluish-green foliage and is about 3 feet tall and 3 feet wide.

Lobelia excelsa.

No. I've seen Lobelia excelsa at Annie's Annuals and it doesn't look anything like my shrub.

http://www.anniesannuals.com/p...

The blooms on mine aren't an orange-red. They're more of a true red, and veering toward blue rather than orange.

It sure looks like whatever is in this photo... which is claimed to be L. excelsa, though I can see that it may not be.
http://www.bayfriendlyblog.org...

It does look like it. I suspect that photo's mislabeled and it should say Lobelia tupa. It says Lobelia excelsis syn. tupa, but I don't think L. tupa is a synonym of L. excelsa. Here are some photos of Lobelia tupa, and you might have identified my blooming shrub.

https://www.google.com/search?...

I'm still not completely convinced because this appears to be an evergreen shrub rather than a mere evergreen perennial plant, and it has never shown any indication to send up spikes of blooms.

Lobelia tupa is said to be woody. (I'm not familiar with it myself.) The flowers on your shrub seem to have a broader lower lip than most pix of L. tupa which seem to often show a divided lower lip... but again, I'm not familiar with how variable the flower form might be.