Things that have been back:

1) Backstreet.
2) Schwarzenegger, Arnold.
3) These two shuttered restaurants.

About number three: welcome back DooWee & Rice (pictured) and Spinnaker, two bygone eateries returning to their original haunts for a limited time.

Here’s your required reading:

The Origin Stories
DooWee & Rice: A Somerville-based mad science lab of Asian-street-food experiments that closed in November 2013.
Spinnaker: Boston’s only revolving restaurant, which slowly whirled 16 stories atop the Cambridge Hyatt before closing in 2004.

What You’ll Find
DooWee & Rice: Endless chicken and rice. Smoked-salmon bao.
Spinnaker: A buffet complete with a raw bar, carving stations and a bar replicating Spinnaker drinks of old. (Mmm... replicated cocktails.)

What You Won’t Find
DooWee & Rice: Their marinated-beef noodles. It’s just not going to happen. Sorry.
Spinnaker: It’s not rotating. Huge win for the vertigo prone.

How Long It Lasts
DooWee & Rice: Every Wednesday, Thursday and Friday for a month. Or at least that’s the plan.
Spinnaker: Exactly 180 minutes of Valentine’s Day–ing.

What Happens After
DooWee & Rice: Will take up permanent residence in Wonder Bar’s kitchen.
Spinnaker: Reverts back to being a ballroom. The kind without a raw bar.

Remember to pour out a little mignonette in its honor.