1. In srimushnam temple, during annual procession, the lord visits a muslim village and takes "mariyadais" from them http://en.wikipedia.org/wiki/Srimushnam
2. When Kanchi acharya aked Pulavar Jeyasenthilnathan to write a book on " Thevara Vaipu Thalangal" All help was rendered by a Muslim Bank manager in nagapatnam for writing the kaviri vadagarai vaipu thalangal.This was acknwoledged by him
3. Kanchi mahaswamy has written an article about a muslim munisif of Kumbakonam in reviviving the hindu trusts in kumbakonam. I will try to locate that article and send to you.
4. I have seen muslims doing archanai in thiruchengode. When asked the head lady replied " idu enga vooru sami. neengadan veliyur alu".
5. I myself was initiated into thirumurais by a teacher of ayyampettai arabi school. That place is called chakrapalli.
6. Who can forget Dr Mu.Mu.Ismail sab and his kambaramayanam works and his discussions with kanchi mahawamy on advaitham in kamba ramayanam. or sheik chinna moulana who was tirupathi asthana vidwan.