From: stamm
 
Excellent Marinade for Shrimp, Chicken or Fish 

Grilled Shrimp - The whole family will love!

1 1/2 lbs of raw shrimp, peeled and deveined.

Marinade: 
1/2 cup Pineapple Juice
1/2 tsp Dry Mustard
2  cloves of Garlic Minced
1-2 Tbsp of Brown Sugar Twin or Splenda or both if you like a sweeter 
taste.
1 tsp Ginger 
2 Tbsp Balsamic Vinegar
2 Tbsp Sherry or White Wine

Mix marinade ingredients together in a glass or ceramic bowl.  
Reserve 3 TBSP marinade. 
Add shrimp making sure it is covered with the marinade. 
Turn over shrimp half way through. 
Let marinade for 20 - 30 minutes
Grill on a medium high grill for a few minutes on each side.  
Baste with leftover marinade.  And grill a minute or two more.

I serve with short grain Japanese sticky rice.  

I am sure the marinade would work well with chicken or fish also. 
Yesterday I made this we had it for dinner.  
I was happy to see there were some leftovers.  
I thought "Oh a perfect for snack today."
When I woke up my husband says "sorry dear those shrimp were so good I ate the rest of them last night!"
I was so glad to hear he loved them, can't wait to make it again.