"Math Rabbit" from The Learning Company.  Kindergarten Fun & Skills.  Encore Software for Windows.

Grade 2 Math, School Zone Interactive.  Windows and Macintosh CD Rom.  On-Track Software.

Two Decks of Math Flash Cards for Practice or Home Schooling.  
Addition, Self Checking, Pocket Flash Cards and Addition & Subtraction Math War Cards.
D.C. Heath "Math Every Day Video,"  Count On Us.  The name says it all.  20 min. viewing time.