There are a ton of great mPerks coupons available right now; here are my very favorite stackable deals:

 $.50/2 Ball Park Franks mPerks (exp 4/29/12) stack with $1.00 off 2 packages of BALL PARK products => $2 OFF (2) PACKAGES

 $2/1 package GoodNites Underwear mPerks (exp 4/30/12) stack with $2.00 off one package of GOODNITES Underwear => $4.00 OFF (1) PACKAGE

 $1.00 off 1 GARNIER FRUCTIS Product stack with $1.00 off 1 GARNIER FRUCTIS Product => $2.00 OFF (1) ITEM

 $1/2 Yoplait Kids Yogurt Items mPerks (exp 5/2/12) stack with $0.75/2 Yoplait Go-Gurt, Kids Cup, Trix, or Splitz, exp. 5/5/12 (SS 03/11/12 R) => $1.75 OFF (2) PACKAGES

 $1/1 Bear Creek Pasta Mix mPerks (exp 4/28/12) stack with $1/1 Bear Creek Pasta Mix, exp. 8/12/12 (SS 02/12/12 R) => $2 OFF (1) PACKAGE

 $.50/3 Zatarain’s Rice Mixes mPerks (exp 7/31/12) stack with SAVE $0.50 when you purchase any THREE (3) Zatarain’s® Rice Mixes printable => $1.50 OFF (3) PACKAGES

 $.50/1 Hormel Natural Choice Lunchmeat mPerks (exp 5/31/12) stack with $0.50/1 Hormel Natural Choice Deli Sandwich Meat printable => $1.50 OFF (1) PACKAGE