Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Lou Costello
Table title:
Television
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 1951–1955 </td><td colspan=1 rowspan=1 > The Colgate Comedy Hour </td><td colspan=1 rowspan=2 > Costello </td><td colspan=1 rowspan=1 > Rotating hosts </td></tr>
<tr> <td colspan=1 rowspan=1 > 1952–1954 </td><td colspan=1 rowspan=1 > The Abbott and Costello Show </td><td colspan=1 rowspan=1 > 52 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 1956–1958 </td><td colspan=1 rowspan=1 > The Steve Allen Show </td><td colspan=1 rowspan=3 > Himself </td><td colspan=1 rowspan=1 > 7 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 1956 </td><td colspan=1 rowspan=1 > This Is Your Life </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1957 </td><td colspan=1 rowspan=1 > I've Got a Secret </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 1958 </td><td colspan=1 rowspan=1 > General Electric Theater </td><td colspan=1 rowspan=1 > Neal Andrews </td><td colspan=1 rowspan=1 > episode: Blaze of Glory </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Wagon Train </td><td colspan=1 rowspan=1 > Tobias Jones </td><td class="highlighted"  colspan=1 rowspan=1 > episode: The Tobias Jones Story </td></tr>
</table>
Question:
Did Lou Costello play on any television shows as himself?
Answer:
Lou Costello played as himself in This Is Your Life, I've Got a Secret, and 7 episodes of The Steve Allen Show.