Hamburger helper is a box of pasta and seasonings meant to add a particular flavor... add your own hamburger (and usually milk too). There are flavors such as lasagna, stroganoff, etc. It's quick, easy to make and generally tasty enough. The sodium is a little on the high side, though.
Manwich is sauce you mix with hamburger meat, then put on bread/buns to make sloppy joe sandwiches.
Shake and Bake is, as far as I understand (never got to try that one growing up), a sort of instnat breading you can use to put on chicken or pork, then you stick it in the oven.