The holiday shopping season arrives earlier every year. Retailers like Best Buy, Office Depot, Amazon, Target, Walmart and more have already "leaked" their Black Friday deals to the public, and most will begin the shopping holiday a day early on Thanksgiving night. For a collection of great deals on tablets like the Samsung Galaxy Tab 2 7.0, ultrabooks like Lenovo's IdeaTab A2, laptops, HDTVs and more follow along below.

Office Depot

Office Depot's leaked ad may be just three-pages, but it's full of deals on new tablets and PCs.

While other stores are also selling the Samsung Galaxy Tab 2 7.0 tablet for $179.99, Office Depot has unique twist: In addition to the Galaxy Tab, you can also get a Samsung Series 3 laptop in a $469.98 bundle. The notebook features a 15.6-inch screen, dual-core Intel Pentium processor, 4GB of RAM, and 500GB hard drive. (It's also being offered by itself for $329.99.)

If you're more concerned with size, you can pay roughly the ssame price for a 9-inch tablet as for the Galaxy Tab 2 7.0; the Lenovo IdeaTab A2 with 16GB of storage will be $199.99. Or you can spend another $100 and grab the 10.1-inch Asus Transformer Pad TF300 with 32GB of storage for $299.99.

Office Depot is forced to sell Amazon Kindle Fire tablets at the same price as competing physical stores, so the company is also dangling an incentive to purchase at its locations: Office Depot is offering a $25 Visa gift card with the purchase of the second-generation Kindle Fire (non-HD version) for $159.99. 

Black Friday deals on Ultrabooks have been fairly scarce, but Office Depot has a 14-inch HP Envy model with Intel Core i3 Ivy Bridge processor, 4GB of RAM, 500GB hard drive, and 32GB SSD for $599.99. Other laptop sales include the 15.6-inch Lenovo G585 with AMD processor, 4GB of RAM, and 320GB hard drive for $279.99, and a Toshiba Satellite with 15.6-inch display, Intel Core i3 Ivy Bridge processor, 8GB of RAM, and 500GB hard drive for $399.99.

If you need a desktop instead, there's an HP with AMD E2 processor, 4GB of RAM, and 500GB for $259.99, or a Lenovo system with Core i3 Ivy Bridge CPU, 6GB CPU, and 1TB hard drive for just $369.99. If an all-in-one model is more your taste, check out the 23-inch HP Pavilion equipped with AMD A6-series processor, 6GB of RAM, and 1TB hard drive for $479.99.

Best Buy

Best Buy's 22-page preview - just a sliver of what's to come, the company promises - includes deals on everything from big-screen TVs and laptops to smartphones and tablets.

Doorbusters will be available once Best Buy stores open at midnight Thanksgiving night, to get the deals and in-store discounts, customers will need tickets, which will be handed out up to two hours before a store's midnight opening.

Tablet doorbusters include the 7-inch Samsung Galaxy Tab 2 7.0 with 8GB of storage in an exclusive white color for $179.99, or $70 off its normal price. The nabi 2 8GB Android tablet for kids will be available for $169.99, a $30 discount from its regular price.

Other doorbusters include a 15.6-inch Lenovo laptop for just $187.99 that features an AMD processor, 2GB of RAM and a 320GB hard drive; a 14-inch Asus notebook equipped with an Intel Pentium CPU, 4GB of RAM, and 320G hard drive for $249.99. and a Dell desktop with an Intel Core i5 processor and bundled with a 20-inch LED-backlight monitor for $499.98.

There's also a Samsung laptop bundle for $349.95 that includes a carrying case, wireless mouse, and security software, though no details about the notebook's specs have been given.

Other tablet deals include Acer's Iconia Android with 16GB of storage for $249.99, while Asus has a similar model for $279.99. Best Buy has the same price on the Amazon Kindle Fire ($159.99) and Kindle Fire HD ($199.99) as everyone else, but is trying to sweeten the deal by offering $30 Best Buy gift cards if you buy from one of its stores.

The preview also has a page of Apple deals, although, as several sites have noted, these appear to be the usual 10-percent off deals Apple always offers on Black Friday. You can get $40-$60 of savings off full-sized iPads (both the iPad 2 and the new iPad with Retina Display) or a 13.3-inch MacBook Air is $1,199.99 before $175 worth of savings.

There are also more deals on a variety of Windows 8 devices, such as an impressive selection of touch-screen laptops, from an 11.6-inch Asus for $449.99 to a 14-inch HP Envy with an Intel Core i7 processor for $629.99.

Best Buy is offering up a number of different HDTV deals (page 7 in the circular), from a 55-inch Samsung LED set for $799.99 to a 40-inch Toshiba LCD for $179.99. There are also many laptop options (page 12), including $200 off HP's Envy lineup.

Also on tap are discounted Roku boxes, gaming bundles, 10 percent off Beats by Dr. Dre headphones, and more.