Hate - Can't think of a lot of mainstream music I truly hate...maybe that awful screaming death metal stuff
Overrated - Any number of modern pop artists. Britney, Katy Perry, etc. How do these people get famous? I grew up in the same town and had mutual friends with Kelly Clarkson. When she won American Idol it really dawned on me that if she, as a random girl from a smallish city in Texas, could have that kind of vocal talent, how many other thousands of people are out there who are remarkably more talented than the vast majority of acts that become famous?
Under-appreciated - The Band. I know they were very highly regarded back in the day, but my impression as a millennial is that their reputation hasn't carried through as prominently as some other major bands of their time. Also, John Mayer as a guitarist. Saw that guy at a guitar festival once riffing with BB King and it was shocking.
Listen to Over and Over - Any of the first 5 Zep albums, or Kind of Blue
Made me Fall in Love with Music - Tough to say...lots of the classic rock music I listened to with my dad when I was a kid.
Changed my Life - Cant think of anything quite this impactful on me
Surprised Me - Not sure...
Guilty Pleasure - Coldplay

Should Have Seen Live by Now - Not a huge concert person, and can't think of anyone I haven't seen that I would really love to
Great Live Band - See above regarding not having been to lots of concerts, but if I had to pick from the ones I've seen...maybe the Eagles
Favorite - Zep
Honorable Mention - Avett Brothers. A previous poster noted that others in the genre do it better, but I either don't agree, or am unfamiliar with other acts to compare them to. The album with No Hard Feelings came out the year after my dad died and that song tore me up every time...still one of my favorite songs period.