Our favorite 

 steak marinade is the Flank Steak from Boma.  ( 
http://www.disboards.com/showthread.php?t=1575103&page=8 ) I just noticed it's missing what little instruction the chefs sent: "Mix all ingredients in a large bowl.  Add flank steak and marinate for 24 hours." [NOTES: This is a thick marinade - almost paste-like. The amounts given are enough to do a 1.5 lb steak. In a pinch, I've marinated for 8 hours & it's still really good - just 
so much better if you leave it for the full 24 hrs. 
 
We do potatoes in foil also.  I spay the foil with EVOO and then put in sliced of onion, red bell pepper & potatoes with the skin still on. I usually only add half the potatoes, sprinkle with spices & then add the rest of the potatoes.  I do spray the top potatoes to keep them from sticking.  Spices - any or all of these: lemon pepper, paprika, garlic powder/salt, chili powder, curry powder, coriander...
We also have found we really like corn on the cob grilled.  We've tried a variety of ways, but prefer to just husk it & put it on the grill.  DH does it so I'm not sure how long on each side - but I think it's 2 or 3 minutes...not long enough to turn black, but will have some color. 

 I don't bother with butter when it's grilled - just sprinkle with lime juice. Yum! 
 
Other than that we like pork roll (like Taylor's), kielbasa and lots & lots of chicken! LOL  A couple favorites for chicken:
[NOTE: Instructions for all marinades...Put everything in a gallon-sized zip-lock bag before freezing.  Then it will marinate the chicken as it defrosts overnight in the frig.]
Triple Citrus Chicken Breasts
Serves 6 
6 	skinless, boneless breasts
1 tsp	grated lemon zest
1 tsp	grated orange zest
1 clove	garlic, peeled & minced
1 Tbl	chives, chopped
1 tsp	salt (opt)
¼ tsp	black pepper or lemon pepper
3 Tbl	fresh lime juice
2 Tbl	fresh lemon juice
1 Tbl	honey
1 tsp	balsamic vinegar
2 Tbl	olive oil
Grilled Sesame Chicken                                                                                                   
6	chicken breasts
2 Tbl	sesame seeds
1 Tbl 	sugar (I skip)
½ c	soy sauce, low sodium
1 tsp	ground ginger
2 cloves	garlic, minced
½ c	olive oil
1/8 tsp	red pepper flakes
¼ c	chopped white onion (opt)
Teriyaki Chicken
1 Clove	Garlic, crushed
1/3 c	Soy Sauce
2 Tbl	Rice Wine (Or Sherry)
1½ Tbl	Cider Vinegar
1½ Tbl	Brown Sugar
1½ Tbl	Minced Ginger or 1½ tsp dry ground ginger
1½ lb	Chicken Pieces
Garlic Lime Chicken
4 	chicken breast 
½ c	low sodium soy sauce
¼ c	fresh lime juice
1 Tbl	Worcestershire sauce
2 cloves	garlic, minced
½ tsp	dry mustard
½ tsp	coarsely ground pepper
And my personal favorite...
Spicy Orange Shrimp
1 lb shrimp
½ c	lime juice
1 tsp	Tabasco sauce 
2½ Tbl	balsamic vinegar
1 Tbl	black pepper
1/3 c	orange marmalade
¼ c	oil
2 cloves	garlic, minced 
1 tsp	Kosher salt
2 Tbl	cilantro
1 tsp	orange peel
¼ tsp	red pepper flakes
Marinate shrimp for 6 to 24 hrs. This works with either raw or cooked shrimp.  I have a fish basket I use to grill the shrimp, but you could skewer them too.