Things To Do On Tuesday, October 21.

Hit the Motherload.

Surprise! Three years since he last appeared on the web, Marcel the Shell (With Shoes On) re-emerged from his hiding place with a surprise new video. It's good news for fans of Jenny Slate and her most famous character, to be sure.

At the other end of the spectrum, we're back after just one day with another round of our less-famous Things To Do Today posts.

That much probably wasn't all that surprising, though. — Cory Graves

Mastodon at South Side Music Hall
Heavy metal is one of those seemingly niche genres that perpetually seems just about to fade from the mainstream. But every time it looks to be on its last legs a new torchbearer emerges. Just as Pantera was to the '90s, Mastodon has been in the late '00s and early '10s. But Mastodon's mix of sludge and proto metal has also caught on with a wider audience than just the typical metalhead crowd. And, for what it's worth, the band is probably one of the more vocally-talented heavy outfits around. Norwegian hardcore and thrash hybrid Kvelertak opens. — CG

This Will Destroy You at Kessler Theater
Instrumental post-rockers This Will Destroy You have evolved quite a bit since the band's inception. For one thing, the originally San Marcos-born quartet is now made up of 50 percent Dallasites. Plus, the band's September released fourth full-length is one that finds it incorporating some ambient, warped sounds into the mix. This is also the band's first time to play in town since that record's release. Pinkish Black and Future Death open– CG

Breakfast at Tiffany's at The Magnolia
Someone asked me what I wanted to do tonight, and I said, “What about Breakfast at Tiffany's?” She then told me I needed to get a life and stop quoting Deep Blue Something. I guess she didn't know that I was being serious and that I do want to see Breakfast at Tiffany's tonight. Oh well. Her loss. — Chase Whale

Gardens & Villa at Dada
Chilled out, synth-driven, Santa Barbara-based indie pop outfit Gardens & Villa began its life quite insistent on being able to pull off every last note on its records in its live offerings. And, by the time the band was ready to record its sophomore album earlier this year, the band brought in DFA producer Tim Goldsworthy to help kick things up a notch. SANDY Alex G opens. — CG

Yellowcard at House of Blues
When you get a yellow card in soccer, it's a warning to stop fucking up or you'll be out of the game. When you get a Yellowcard in music, it's a reminder that rock from the early '00s ain't dead, no matter how hard you wish it was. — CW

A Taste of Arlington at Arlington Convention Center
Hungry? Why wait? Taste of Arlington has kicks off this evening at 5:30, with over 20 booths ready for your perusal. One of those, we should point out, is from Marquez Bakery, the longtime Arlington staple that serves up maybe the best breakfast tacos in North Texas. Other than that, there's not one type of food you cannot get at this event. Except human flesh. That you will have to buy out back. — CW

To find out what else is going on today, this week and beyond, check out our events page.