SHARE was a great experience and it was good to finally meet all the people I have corresponded with over the years.
The CICS track was great with some incredibly professional in depth sessions. The highlight of the CICS track for me was definitely Gene Linefsky's presentation on "Building an Enterprise Ready Java/CICS Environment".
I also found some Assembler, C++, Java, MQ, DB2 and USS sessions interesting. The XML processing capabilities of DB2 9 just blows my mind! The session on that subject was very informative.