Information Week has a great roundup of the offerings from these three carriers, many of which extend through the weekend so you might not have to leave the house on Friday armed with your spiked collar and can of mace. Just remember, if you elbow grandma out of the way to snag that Motorola CLIQ, the universe will be watching.
Here's an example of the BlackBerry deals from each carrier:
Verizon: Buy one, get one free. Includes the new BlackBerry Storm 2.
AT&T: Saturday is a 24-hour sale on RIM's smartphone lineup. Pearl 8110s and Curve 8310s are going for free, the Curve 8320 can be had for $49, and the Curve 8900 picked up for $99.
T-Mobile: $50 off a BlackBerry Bold 9700 with Wi-Fi calling, which drops it to $149.99 with a 2-year contract.
Other deals are available too, like a Gateway LT Netbook from Verizon for just $29.99 with a new contract after $100 mail-in rebate.