[bayourod]

"Have you not noticed that in the past 15 centuries history has not recorded that one single Muslim religious scholar has entered Judaism or Christianity?{....}

The punishment for apostasy (riddah) is well-known in Islaamic Sharee’ah. The one who leaves Islaam will be asked to repent by the Sharee’ah judge in an Islaamic country; if he does not repent and come back to the true religion, he will be killed as a kaafir and apostate, because of the command of the Prophet (peace and blessings of Allaah be upon him): "Whoever changes his religion, kill him." (Reported by al-Bukhaari, 3017).

[GeorgiaYankee]

I don't know how many are "scholars", but here are some links about Muslims who have converted to Christianity.

http://answering-islam.org.uk/Testimonies/

Link below has a radio interview with Ergun Caner, son of a Muslim Cleric. Now a Christian Pastor with a degree in theology.

http://home.christianity.com/topics/christianity_and_culture/worldviews/81783.html

He and his brother both converted to Christianity and wrote the book "Unveiling Islam"

http://www.amazon.com/exec/obidos/tg/detail/-/0825424003/103-4749056-1119028?v=glance