Richard Diebenkorn Exhibition Opening & Free Summer Saturdays at the Corcoran Gallery of Art, Saturday

This Saturday, the Corcoran Gallery of Art opens the first large exhibition of artist Richard Diebenkorn's work on the East Coast.

Even better? It's free.

Once again, the Corcoran will not charge admission on Saturdays this summer, and the opening day of the Diebenkorn exhibit is no exception.

Richard Diebenkorn was a mid-20th century California-based abstract expressionist best known for his Ocean Park series, highlighted by cool tones and a very southern California serenity.

"He's a very important part of American modern art," said Linda Powell, senior director of interpretation and visitor experience. "He didn't go with what was in vogue around him. He as an artist was very true to himself."

The Corcoran's Diebenkorn Ocean Park exhibit is set apart not just by the number of pieces on display, but a collection of painted cigar boxes the artist gave as gifts.

The popular Free Summer Saturdays runs through Sept. 1.

When: 10 a.m. to 5 p.m. Wednesday and Friday through Sunday, 10 a.m. to 9 p.m. Thursday, closed Monday and Tuesday.

Info: Saturdays are free, other days are $10 for adults;

Rachel Feinstein at Riot Act, Friday

Comedian Rachel Feinstein competed on Last Comic Standing and boasts her own 30-minute Comedy Central special. See for yourself what the fuss is all about.

When: 8 p.m. and 10:30 p.m. Friday.

Info: $20 for the early show, $22 late show, two item minimum;

Jukebox the Ghost at the 9:30 Club

Band with local ties -- they once attended George Washington University -- just released its third full length album titled "Safe Travels" earlier this month.

Info: $15;

When: 8 p.m. doors Friday

Iron Maiden at Jiffy Lube Live, Saturday

Metalheads rejoice. One of the best hard rock acts of all time, Iron Maiden, visits Jiffy Lube Live as part of their Maiden England tour.

When: 7:30 p.m. Saturday

Info: $31 to $92.50;

"Mr Burns, a Post-Electric Play" at Woolly Mammoth, through Sunday

How to survive an Armageddon? Well, reminiscing about "The Simpsons" is a start. The Woolly Mammoth Theatre Company has done it again with another compelling, quirky take on life. This is the final weekend of the show's run.

When: Friday at 8 p.m., Saturday at 3 and 8 p.m. and Sunday at 2 and 7 p.m

Info: $40 to $72.50;