A reason to talk to your sister more often: mine got me the Ultimate Superman DVD collection for Christmas. It has everything...it even has the 50th anniversary TV special, Superpup, and the Bugs Bunny "Super-Rabbit" spoof of the Fleischer cartoons.
Not to mention all the Fleischer cartoons themselves.
They should've put the Pinky and the Brain "Two Mice and a Baby" episode on there as well, but that's a minor quibble.
Say, did you get the "corrected" Superman III with the extra features actually on the disk? I'm still waiting for the WB to send me my shipper to return the defectively-burned disk(s).