There is yet another temple where the Shiva Linga absorbs entire Oil when abhisheka is performed.
This temple has the Idol made of Athi Tree as the one in Kanchipuram Varadaraja Perumal temple.
The moolavar is Lord Vishnu and the Utsavar is Yoga Narasimha,which is a rarity.
This type of worship is called Saguna Upasna, Worship of Reality with Attributes.
Lord Krishna explains to Arjuna that He(Krishna) appears and grants the wishes of His Devotees in the Name and Form He is addressed
There is another Shiva temple near Chennai.
The Shiva lingam has ,as His Accoutrement,a Stem,which resembles the Stem of Lotus.
There is a temple near Kumbakonam,Tamil Nadu for relief from poisonous bites and life threatening fever.