8:59 p.m. ET: Madonna recounts her turn on American Bandstand…

6:30 p.m. ET: ABC News political correspondent Rick Klein tweets about the lead story on ABC, NBC and CBS:

3:43 p.m. ET: ABC News confirms that Dick Clark has died at 82. Obit HERE. Here's what our ABCNews.com homepage looked like when the news broke:

3:13 p.m. ET: ABC News' Matt Gutman tweets:

12:06 p.m. ET: "Nightline" anchor Bill Weir first gave us a preview of Google Glasses:

But if you just can't wait to get your hands on a wearable computer, ABCNews.com tech editor Joanna Stern points out there are a few other options out there, including a "smartwatch" and another pair of glasses that looks like ski goggles. Check it out HERE.

10:39 a.m. ET: DEVELOPING: We've been watching this bizarre story this morning about a registered nurse who shot and killed a new mother outside of a pediatrician's office in Texas, kidnapped the woman's 3-day-old son, only to be captured by police a few hours later. The baby was found unharmed. Read more HERE.

9: 18 a.m. ET: "Nightline" producer Ely Brown has been embedded in an extreme training camp in Chesapeake, Va. for an upcoming segment. She sent in this photo:

Credit: Ely Brown/ABC

 8:41 a.m. ET: TONIGHT, ABC's Chris Connelly sits down with the ensemble cast of "The Avengers": Chris Evans (Captain America), Chris Hemsworth (Thor), Mark Ruffalo (Incredible Hulk), Scarlett Johansson (Black Widow), Samuel L. Jackson (Nick Fury), Jeremy Renner (Hawkeye) and Cobie Smulders (Maria Hill). Robert Downey, Jr. (Iron Man), wasn't present.

Judging by the way they were joking around with each other, it was clear the cast enjoying working together on and off set. ScarJo said she sang "Rocky Raccoon" at a dive bar in Cleveland, and Hemsworth said he had to wear " a little air conditioning unit" to stay cool under his Thor costume.

Credit: Eric McCandless/ABC