Dinesh,

Here's the proof:

http://www.cisco.com/en/US/customer/products/hw/switches/ps5023/products_configuration_example09186a00807811ad.shtml#stack_tech

or from that document:

Note: A Cisco 3750 switch can be stacked with any other model of Cisco 3750 switches. Catalyst 3750 switches that run Cisco IOS® Release 12.2(25)SEB are compatible with Cisco EtherSwitch service modules that run Cisco IOS Release 12.2(25)EZ. Catalyst 3750 switches and Cisco EtherSwitch service modules can be in the same switch stack. Within this switch stack, the Catalyst 3750 switch or the Cisco EtherSwitch service module can be the stack master.

Brad