More deals appear online every day as retailers race to leak their own Black Friday deals ahead of the biggest holiday shopping day of the year. Best Buy, Staples and Sears have leaked their holiday deals.

So far, the best tech deals on the ads from each store include a $200 Sharp 42-inch television (normally $800) from Best Buy, $300 off the BlackBerry PlayBook for a $199 price from Staples and a $99.99 Sony Speaker Dock for the iPhone and iPod from Sears.

Best Buy is also offering a Verizon Wireless HTC Thunderbolt for free with a two-year activation, game titles such as Battlefield 3, Arkham City and Uncharted 3 for $29.99 each, and an 8 GB iPod Touch for $194.99 and bundled with a $50 gift card. The store is also offering an event for Black Friday shoppers: a showing of Harry Potter and the Deathly Hallows, Part 2. The screenings will take place at 120 stores across the country, starting at 9 p.m. Thanksgiving Day.

Staples also has a gift care bundle — a Nook Color for $199 plus a $25 gift card — and savings on HP laptops and hard drives.

Sears also announced that it will honor other Black Friday ads with its holiday price match policy, and also offer “Cyber Monday Now” prices on its Web site.

Related stories:

Toymakers’ muse: The app

Black Friday: Wal-Mart ad is now online

Black Friday: Best Buy joins in on ‘Black Midnight’