I have heard of the position that signs and wonders were given to confirm the Word being preached, but now we have the bible and the church has been set up, this no longer happens.
There is scripture pertaining to the first part, but I'm not sure about whether signs and wonders have stopped completely or not.
Mark 16:19-20
19 So then after the Lord had spoken unto them, he was received up into heaven, and sat on the right hand of God. 20 And they went forth, and preached every where, the Lord working with them, and confirming the word with signs followng. Amen.
Hebrews 2:3-4
3 How shall we escape, if we neglect so great salvation; which at the first began to be spoken by the Lord, and was confirmed unto us by them that heard him; God also bearing them witness, both with signs and wonders, and with divers miracles, and gifts of the Holy Ghost, according to his own will?
Acts 8:5-7
Then Philip went down to the city of Samaria, and preached Christ unto them. 6 And the people with one accord gave heed unto those things which Philip spake, hearing and seeing the miracles which he did. 7 For unclean spirits, crying with a loud voice, came out of many that were possessed with them: and many taken with palsies, and that were lame, were healed.
And as Jeanne said, there are also the false faith healing type ministries. A lot of these are teaching a false gospel and false doctrine, so I'd be skeptical about any 'signs and wonders' there.