Moogle has spent countless hours working on these mods :) If you enjoy it and would like to see them further developed and maintained feel free to donate some beer $ to him.

Has its own page now

More Block IDs for SMP

Stack Mod

This one is for  beta 1.2_01 Server StackLimitMod.zip
Removes the limit of 64 items that a player can have in their inventory.
Dispensers can have crazy stacks in them now but you might need to use a auto clicker to achieve this
New Default Stack limit is 512 items :)
You can use /give PlayerName ItemID ItemNo to give up to 512 of an item now also :)
To install. Open up your server.jar file with a program like winrar. delete the meta-info folder and copy all the files from the zip to your .jar
Enjoy