Wow, thanks for all of your answers and opinions - great stuff. I never knew Liberace was huge during the 60's!

Some really interesting replies, especially about Aunt Harriet. She had so much more screen time in these episodes, maybe the audience liked that. And maybe Liberace
was trying to overact, as dell said, and just didn't do it well. ( King Tut was the most brilliant over-actor of the entire series, anyone else agree?

)
The big draw was Liberace, who was very popular in the 60s. This was the point where Batman was the in show and Liberace was probably the biggest start to do the show yet.
I had no idea he was so famous! Wow
I NEVER liked Aunt Harriet as a character; I thought she was nosey, bossy, and really not all that bright.
I'm not sure about bossy, but Aunt Harriet kinda reminds me of a mother hen. She treated Dick like he was 5! haha. She tends to faint a lot, but she sure got me when she pulled a gun out on Chandel, lol. Wasn't it said that casting Aunt Harriet was tricky, because she couldn't be sharp enough to be suspicious and curious, but couldn't be a complete dope? She could have been a bit sharper/brighter.
This story is not so great for the GCPD, which fingerprints concert goers and watches over the performance with machine gunners. (Worse than the TSA?) The certainly look helpless without the Dynamic Duo.
Lol. Just remember, when it comes to the human mind, the GCPD just ain't equipped!
Meanwhile, the girl gang robs another target. The Phantom Girls were fantastic. What fate would have befallen Batman and Robin in their capable hands?
These girls seemed evil, criminal, and elusive enough to be a trio of villainesses, and get their own 2 episodes. They seemed to be above moll material.
I like the Chandel episodes although there was certainly room for improvement. For example, instead of Liberace playing the twin brother, I would have expanded the James Millhollin character, Mister Sly. I would have made him Chandel's crooked agent who blackmails him.
That sounds cool! It would take on a different twist

He would have to be very crooked and evil Mwaahahahaha

lol
How can anyone explain the poularity of Liberace? I think the Chandel episodes were the worst!!! If I were tied to a chair and forced to watch "Lee" grinning and winking at Aunt Harriet for just a few seconds, I'd confess to Lindbergh Kidnapping and being the second gunman on the Grassy Knoll!!!
Lol. Downright funny
Liberace was a fantastic piano player and a great showman. He was not a very good actor in my opinion. To be fair, every guest star overacted on Batman so maybe he was a good actor, but not a good overactor (that is probably not a real word, but you know what I mean). Liberace's popularity is what drove the ratings for these episodes. Oh, can you only imagine what could have been if these had been really good episodes? Batman might have attracted more fans. However, since these were not very good episodes I doubt many people who tuned in to see Liberace ever came back to Batman.
I'm with Riddlergurl and not a big fan of Aunt Harriet. However, she actually had something real to do in this episode instead of dithering about that "strange noise in Bruce's study". These were some of the best Aunt Harriet episodes and it is too bad they didn't use her more like this.
This is a very interesting answer, and I agree with what you are saying. And dithering is a good word to use for Aunt Harriet when at Wayne Manor.

It's a shame these episodes didn't attract more fans, since the opportunity was there.
The inclusion of Alfred in the series, like the use of the yellow oval-less uniform insignia in the screen tests, strongly suggests the show's development was based off comics that predate Alfred's death and Aunt Harriet's arrival at Wayne manor. Dozier has said that Aunt Harriet was introduced to the series head off concern about an all-male household at Wayne Manor. It makes sense that they'd pull a character who existed in the comics to fill that role, even if she hadn't been considered (or even been around TO consider) when the show was in development.
This is very interesting too. The screen tests were quite different, think you're right with how they were basing it off of comics of the time mentioned. The more ya think about it, the more sense it makes. Did anyone else wish they had even been 'dressed for work' in the batcave without their masks on, like in the screentest? I thought it was kinda cool. I guess I liked that cause it puts more connection between them and their secret identities. I dunno.
I'm guessing the Chandell audience was aided by the many women who were fans of Liberace that wouldn't ordinarily watch what they likely perceived as a kid's show--no matter how hip it still was.
Did Chandel have crazy hair at times?
Wow, thats so long I'll be surprised if anyone actually reads all of it

Thanks for all of the awesome replies and answers! Definitely helped bring my understanding of these episodes to new depths!