Big Square Eye

{{Short description|Australian children's game show}}

{{Use dmy dates|date=January 2025}}

{{Use Australian English|date=October 2016}}

{{Infobox television

| image =

| caption =

| alt_name =

| genre = Game Show

| creator = Helena Harris

| based_on =

| developer =

| writer =

| director = Stephen Jones

| creative_director =

| presenter = Bob La Castra

| theme_music_composer = {{ubl|Glenn Heaton|Geoff McGarvey|MC Codeblue}}

| opentheme = "It's the Big... It's the Big..."

| endtheme = "Tell Your Friends About the Big Square Eye"

| composer = Paul Mac

| country = Australia

| language = English

| num_seasons = 2

| num_episodes = 80

| list_episodes =

| executive_producer = {{ubl|Claire Henderson|Robert de Young}}

| producer = {{ubl|Stephen Jones|Helena Harris}}

| editor =

| location = {{ubl|Sydney, New South Wales (1991)|Melbourne, Victoria (1992)}}

| cinematography =

| camera =

| runtime = 30 minutes

| company =

| channel = ABC

| first_aired = {{Start date|1991|06|24|df=y}}

| last_aired = {{End date|1992|11|06|df=y}}

| related =

}}

Big Square Eye was an Australian children's game show that aired on ABC TV from 1991 to 1992, with a final repeat broadcast in 1993. It was hosted by Bob La Castra,{{Cite news |last=Wallace |first=Mark |date=1991-06-17 |title=Yet another string to Bob's bow |page=30 |work=The Canberra Times |location=Australian Capital Territory, Australia |url=http://nla.gov.au/nla.news-article118151179 |access-date=2016-03-30 |via=National Library of Australia}} with musician Paul Mac{{Cite news |last=Cahill |first=Mikey |date=2013-05-04 |title=Spiritual hook-up |work=Herald Sun |url=https://infoweb.newsbank.com/apps/news/openurl?ctx_ver=z39.88-2004&rft_id=info%3Asid/infoweb.newsbank.com&svc_dat=AUNB&req_dat=2FC64405CDC9450D8CE0F660AE4E730F&rft_val_format=info%3Aofi/fmt%3Akev%3Amtx%3Actx&rft_dat=document_id%3Anews%252F1460E9BBD205C500 |access-date=2021-10-24}} appearing as "Knuckles" McDermott, who handled the keyboard and sound effects. The programme aired on weekdays just after 5 pm as part of the Afternoon Show programming block.

The premise of the program was that each episode had celebrity guest judges which particular skills which they would demonstrate to the children in the audience. Contestants were selected from the audience to attempt a challenge which involved the celebrity guest's skills to their satisfaction. Guest judges included artist Ken Done, entertainer Jeanne Little, and cricketer Mark Waugh.