NY Strip steaks. Nothing on them but a little olive oil, kosher salt and fresh ground black pepper. Roasted red skin potatoes with rosemary and garlic.
Tri-Tip is an odd cut unless you are from California, it is becoming more popular in other parts of the USA. it's a triangle shaped roast that comes from the bottom sirloin. give it a simple dry-rub then you cook it over hot oak coals slighlty charing the outside.
http://www.beeffoodservice.com/Cuts/Info.aspx?Code=48
look up "Santa Maria Style Barbeque" if you want to learn more.
My neighbors from MI have relatives ship/bring Tri-tips. They say it's a big thing in MI. They say it cut needs to made just after slaugter to keep the meat tender.