Growing up in a very charismatic flavor of Christianity I thought I 'experienced' a lot of phenomenon that I now look back on with contempt. People preach, seek out, and legit believe (despite no hard evidence) in supernatural healing, limbs regrowing, divine languages, divine laughter/joy, spontaneous creation of jewels, etc.
IME the claims that become most popular are the ones impossible to falsify. So testimony is usually all that's left.