Kenneth Fisher has a script to take information out of the error log and put it into a table:
This is one of my favorite scripts. It pulls all of the data from the error log and dumps it into a temp table. I did one version here but it was pretty specific to I/O errors. I also gave some homework to find/build a script like it. So if you didn’t do the homework here is a nice little (more generic) script that I personally find extraordinarily handy. There are two parameters at the top that will restrict the data pulled in, and a query against #LogInfo at the bottom that filters out backupand logon entries since they tend to get in the way of what I’m looking for. That said, if you want to create a report on logons (or backups) you’ll want to modify the query. I do leave #LogInfo open and the end so you can run multiple queries against it.
Click through for the script.