Every day, Amazon offers up Lightning Deals, limited quantities of various products for a discounted price for a 4-hour window of time. You have to be on the lookout for these deals and once the item runs out, the sale is over. Meaning, if you see something on sale that you want, buy it immediately before it’s gone.

Typically you don’t know what will be on sale until the minute it gets posted, but as a prelude to Black Friday, Amazon has released the Lightning Deal schedule and prices for Movies & TV on DVD and Blu-ray for Thursday, November 28, 2013.

See here below for a few highlights from Thursday’s deals, along with more information on how these special deals work, and be sure to keep an eye out on the main Lightning Deals page for sale launch times and countdowns.

On this year’s Valentine’s Day episode of the CBS sitcom The Big Bang Theory, the character Leonard (played by Johnny Galecki) is seen wearing a 2012 Great Lakes Bat Festival T-Shirt.

That shirt is available on sale right now at the Bat Con online store for only $10.

According to the Organization for Bat Conversation, a non-profit dedicated to the welfare of bats and preserving their habitats through education, collaboration, and research, the shirt features the following bats species: (clockwise, starting at the top) an Indian Flying Fox, False Vampire Bat, Greater Bulldog Bat, and the Mexican free-tailed Bat.

Grab this shirt now while it’s on sale and contribute to a great charity to help the bats! (I already own the shirt and I paid $19 for it!) Visit batconservation.org to learn more about the organization and check out their donations page if you’re interested in donating to this charity and/or sponsoring a bat.

The deal of the day over at Things From Another World today is The Big Bang Theory Party Game for only $16.49 (that’s 45% off the list price of $29.99).

Note – This deal is valid only for today, Thursday, February 28, 2013, til 11:59PM PST while supplies last.

If the deal sells out, you can also get The Big Bang Theory Party Game at Amazon for the discounted price of $22.77.

On the CBS sitcom The Big Bang Theory, the characters are often seen wearing interesting t-shirts of the superhero, science, and geek mash-up variety. Recently, on the show’s Valentine’s Day episode, the character Leonard (played by Johnny Galecki) is seen wearing a 2012 Great Lakes Bat Festival T-Shirt.

That shirt is available right now at the Bat Con online store for $19. To get 10% off that price, enter the code BBT13* when purchasing

According to the Organization for Bat Conversation, a non-profit dedicated to the welfare of bats and preserving their habitats through education, collaboration, and research, the shirt features the following bats species: (clockwise, starting at the top) an Indian Flying Fox, False Vampire Bat, Greater Bulldog Bat, and the Mexican free-tailed Bat.

There’s a limited quantity of these shirts in stock, so definitely grab this while you can – and with the 10% discount – and contribute to a great charity to help the bats! Visit batconservation.org to learn more about the organization and check out their sponsorship page if you’re interested in donating to sponsor a bat.

The $10 t-shirt deal of the day over at TeeFury today is a The Big Bang Theory-themed shirt called “Soft Kitty” by ramyb.

The sale began at Teefury today, Friday, February 22, 2013 at 11:59pm EST, and will continue for 24 hours from then, and once it’s over, it will not be sold on the site for $10 anymore, though it might continue into the next day for $13 (look for the After Hours bar at the top).