Samsung 64gb Pro MicroSD - $23.99
Plus a free book.
Sandisk 2TB SSD USB 3 Drive $599
Its on sale right now at 25% off. The lowest price ever, but it may be the normal trend by this Summer.
5TB External USB Drive for $160
Best Buy has the Seagate External Backup Plus 5 TB drive for a low $160. This is one of the best TB vs price ratios on large capacity drives. Free shipping.
These also work on the Mac with a free NTFS driver found on the drive itself.
I've had 2 external Seagate Backup Plus devices still going strong after the 2 year warranty period. They tend to be 5xxx RPM drives in there so don't expect a speed demon.
Update on 2014-04-30 19:09 by Mike Mu
This must have been a price mistake, because the price has been raised.
Two Seagate 4TB Backup Plus External USB 3 - $234
Two Seagate 4TB Backup Plus External USB 3 drives for $234 here. Scroll down the page to see the deal.
Drobo 5N for $469.99
Today only. Gold Deal.
WD 1TB Portable Hard Drive and Premium Defense Bundle $39.99 AR
Pretty good bundle, just make sure you submit the rebate within 30 days and activate the subscription.
Click Here to activate the deal @ TigerDirect.
WD Elements 1TB Portable Hard Drive and Total Defense Premium Internet Security Bundle
Samsung 840 500GB Drive for $259
Samsung 840 Series 500GB 2.5 SATA III Solid State Drive (SSD)
Fantastic performance. If you are still using a standard hard drive for your main drive, this will be a very big, speedy boost for you.
At rakuten shopping (formerly buy.com)
Seagate 1TB USB 3 Portable Drive - $59.99 After Rebate
Seagate 1TB USB3 Portable Backup Drive for $59.99
Best deal I've seen, with 2 year warranty. MAC Friendly with NTFS driver included.
Seagate Backup Plus STBU1000100 1TB Portable Drive
HP 32 GB Class 10 for $22.49
HP doesn't actually manufacture these - but they're just as good.