To add onto what PiT said, I really do recommend Craig Keener. His 2-volume set Miracles really does a lot to show examples of everything from healed blindness to instant burn healing as a result of prayer. A lot of Christian apologists shy away from evidence for miracles in the modern day due to the association with shysters and televangelists, but there really is a lot of testimonial evidence from around the world for dramatic healings associated with Christian prayer and mission. What I think makes Keener's case particularly compelling is that the most dramatic miracles tend to occur in areas that are just hearing the gospel for the first time - this is consistent with a God who is interested in reaching people who are genuinely open and have not yet heard the gospel.
Admittedly, Keener's work is kind of expensive but
here is a good taste of what you will see in his book.
I also agree with PiT that this is likely not be the most powerful reason to have faith on a personal level, but I do believe that from a purely rational, empirical point of view this evidence from miracle testimony (often with medical documentation!) carries serious weight.
