3 Hour sale: Adobe Lightroom 5 for $89.
Deals below vary in expiration date.
Wide gamut display
See the discussion of wide gamut displays.
It already was/is already a deal: the wide-gamut NEC PA271W display with calibrator and Spectra View II software is now down to only $1164.
Sigma DP Merrill $200 instant rebate
All three models have a $200 instant rebate through Dec 3rd, making it $699 for the DP2M or DP3M and $799 for the DP1M. Links here, click through for discounted price.