The Jack Kelly Facebook page has posted links to an endlessly entertaining blog called "Inner Toob - A Look at TV as An Alternate Reality". This clever blog puts forth the notion that our favorite TV characters all live in one big universe and makes whimsical (but logical) connections between them.
The most recent postings focus on Maverick. One posting is about the most mysterious Maverick, Brent, the never-before-mentioned sibling who suddenly materialized in season four.
And, speaking of Brent:
Here's a picture of him and his brother, Bart. Bart seems to be thinking, "Who is the tall dark stranger there...and why is he wearing Bret's clothes?!"
Here's a close-up of Brother Bart, which is dedicated to JK fans everywhere, and one very special fan (and lady) in particular: