I know when I was younger that sort of thing was very common in Pentecostal churches but I think a lot of them have mellowed now. The mainstream groups I've visited more recently have been pretty mild. But there are definitely fringe Pentecostal groups and groups who broke away from Pentecostalism that are still pretty out there.
I see Pentecostalism as more dangerous now than ever because of the veneer of respectability they've acquired. People just shrug and say it's just a regular religion but their doctrines are anything but regular.
The hardcore Pentecostals I knew so many years ago were heavily geared to "demanding a sign" and by their authority "doing a miracle, sign or wonder". I never did see any substantial results. We all know the Scriptures pertaining to this matter.
What I did NOT see very much of is preaching the gospel to every creature.
The emotional ups and downs and "acting out" were too much for me.....I bailed out.
Disclaimer: All of this was more than 20 years ago so my memory is a little sketchy.
However I DO absolutely believe that we should prayerfully and humbly ask God continually and petition him for His gifts, intercession, healings and guidance. There is also no doubt in my mind whatsoever that God is both capable and willing to do it (we all know the Scriptures pertaining to this matter as well).
But of utmost importance is that it is HE, the King, the Lord of glory, Who is calling the shots and doing HIS perfect will......for HIS glory. I found that these Pentecostals seemed to be putting (or trying to put) God on a leash to do THEIR will. It is this which I found to extremely disturbing. And the main reason I bailed out.