One of the things I love working with is MS Excel.  Working with large amounts of data and creating macros. When I work with in Excel it drive me crazy doing repeated, redundant tedious tasks.  So every time I run into these I develop simple code (sometimes complex) to do it for me to save me time. I also enjoy dealing with data, the more the better.  I look for trends, or fix errors, filter, sort, compare, look up or reorganize.  Have data on multiple sheets or files, I can handle it.