Not sure any of these can make it for the holidays, but here they are anyway:

25% off – Coupon Code: GV$FTDVSCBMS3C
Inspiron 6000, 630m, 700m & 9300 notebooks
Latitude D610 notebooks

20% off – Coupon Code: VK2HM1W$KH$N44
Latitude D510, D810 & D410 notebooks

15% off – Coupon Code: Q43VTR2TRGL2SD
Inspiron B120 & 1300 notebooks