Do you have any guilty pleasure bands / singers / shows?

Yes.
When it comes to guilty pleasure bands or musicians, the one that comes to mind is Nickleback.
I actually really like their music. Songs like: "Burn it to the ground", "Kiss it goodbye", "Where do I hide", "Million miles an hour", "Hammer's coming down", etc, sound really bad ass and I listen to them frequently. And songs like: "When we stand together", "If today was your last day", "How you remind me", Someday", "If everyone cared", "Gotta be somebody", are songs that have meaning to them, and actually sound really good, even if they sound similar.

When it comes to guilty pleasure show, I can think of a few:
-Berserk (2016): the animation is piss-poor, the editing is confusing, the pacing is rushed, but the music is awesome, the voice acting is bad ass, and the fight scenes are decent.

-Transformers Beast Machines: The appearance of the Maximals is just plain ugly, and the show is both boring and uninteresting at times due to the dark tone of the show, I personally believe the animation is improved, as oppose to Beast Wars, the musical score, especially during action scenes was awesome, and the final fight between Optimus Primal and Megatron in the finale of the show was amazing.
It's still not a good show, but I like it.

-Transformers Robots in Disguise (2015): While it pales in comparison to Prime, I really like the characters in this show, and they even go through character development. And while it does have problems, I find the show...charming...to say the least.

-To Men and a Half: While the later seasons are awful, the first seasons of the show are really funny, in my opinion. I also have fond memories of it, because I started watching it a few weeks before my Summer vacation of 2012 ended, and I watched it every night before going to sleep.
Overall, I still think it sucks, but I still find the early seasons to be really funny and enjoyable.

-The Pokemon anime: While the quality of each region varies, I still watch it from time to time. I especially love the Diamond and Pearl, and X and Y, seasons.

Yup

MLP is the first thing that comes to mind when the topic 'guilty pleasure' is brought up. I mean I still kinda like the show it's just.. I'm not as invested in it as much as before + no one irl knew I like it until years later since I hid the fact that I liked it at the time. Idk I plan on going back to it someday but I don't think I'll get as into it as much as I was before V_V

As for bands: Simple Plan :v
Dunno why but it is

Early Taylor Swift songs.

Shows: Winx and Bad Girls Club

Bands: Miley Cyrus, BOTDF, And Nicki Minaj

Even so I openly say that I enjoy them.

$ coffee and chocolate
i spend a lot of money for high quality chocolate.coffee
>Yaoi
> browsing too much anime photos xD

Shows: Goosebumps, Are you afraid of the dark?, Dawson's Creek and how could I forget Sailor Moon. I love Sailor Moon.

Bands/Singers: Demi Lovato, Selena Gomez, Britney Spears, Nicki Minaj, One Direction

I think that's it.

Britney Spears. >.> <.< that's really the only thing I am self conscious about to even be a guilty pleasure. Everything else i don't even care if people know

Shows: Riverdale, Kickin It, KUWtK, Dance Moms, and Toddlers and Tiaras jklsjfkla

Singers/Bands: 1D and Katy Perry honestly

I'm just going to put all of my favorite fanfictions into this category

Frickin Babymetal lol

Still don't know how to feel about their music yet have listened to them an indecent amount of times

Apart from that... Kesha even though she annoys me. Trashy Britney songs. New Justin Bieber (that shit is actually good though)

And runescape music because I'm trash

Omg and eurovision music, so much eurovision music

Also how could I forgot link.

My New Single The Cure is Out Now!

Oh yes, Girls Dead Monster. And I'm more embarrassed/secretive if it's one of Yui's versions of their songs, because she's so high-pitched and unrealistic sounding, while Masami at least sounds like a person.